Remember, if you find a web-app that you like, you can add an web-clip icon to your homescreen that will take you directly to that web-app (as long as you have at least v1.1.3 installed).
Hit the link to check out the Top 10 iPhone web-apps list (actually, there are more than 10, but “10″ sounded like a nice round number).
Photo Forward - this isn’t exactly a web-app, but it’s cool-worthy nonetheless. Photo Forward is a bookmarklet that scans the webpage you are currently browsing for all images, and then gives you the option to send a link to any of those pictures to an email address. The iPhone doesn’t let you copy text (or paste it, for that matter), but you can email it to yourself to use later. 
- Tabulate - this simple bookmarklet enables true tabbed browsing on the iPhone Safari browser. Sure, the Mobile Safari browser already supports tabbed browsing by allowing you to open multiple windows simultaneously, but with Tabulate you can actually force Safari to “open link in new tab.” Whenever you hit an embedded link in a website, you’ll be given the option to “flag” the site for later viewing, open it in the current tab/window, or open the link in a new tab/window. Tabulate also keeps track of how many websites you’ve flagged for viewing later.
Go to the site, add the bookmark to your desktop Safari browser, then sync your iPhone (remember to check the box to sync bookmarks with your iPhone). Now, whenever you start your iPhone’s Safari browser, just fire up the Tabulate bookmarklet and you’ll be good to go.
Food Network - quickly and easily find out what’s for dinner tonight. The iPhone web-app from the Food Network puts the entire Food Network recipe catalogue on your iPhone. Pick recipes by ingredients, holiday themes, and even by chef. We like Giada - her recipes are nice too. 
Zinio Mobile Newstand - browse Zinio’s top-selling digital magazines from your iPhone. The interface is sleek and fast thanks to the AJAX-heavy iPhone optimization. Pick your magazine, browse through the pages, and zoom in for a crystal-clear view of the page. Unfortunately, all the juicy bits are blurred out (ahem, Playboy’s pictorials). Still, Zinio Mobile Newstand is the best way to kill time on your iPhone - if you’re into that whole “reading” thing.
- Remember The Cat - built on the famed Remember The Milk to-do list’s API, but the iPhone specific version is free (Remember The Milk requires a “Pro” account to use the iPhone version), and the interface is slick and faster to navigate.
OneTrip - the best shopping list for the iPhone. Remember The Cat is good as a to-do list, but is a bit cumbersome as a shopping list. Use OneTrip for your next grocery-day. You won’t forget the milk, because you’ll have it in your grocery list.
PogoNotes - from the makers of the Pogo iPhone Stylus. Share your notes with friends and access them online or through the Mac OS X Widget. Log into your PogoNotes account and create notes. You can choose to share your notes with your friend, a group, or everyone. You can also search for shared notes within a certain group, or from a specific user (your friend). PogoNotes is the social network equivalent of a notes application.
Noter - another online-based notes application that allows you to share notes with friends and co-workers in almost real-time. Here’s how it works. You and your friends or co-workers all share a single Noter account. Everyone can log into the same account and load the Noter client onto their iPhone - allowing them to make/edit notes at will. The finished notes can by synchronized to the server, which can in turn be synchronized to other users’ Noter clients. It’s a great collaboration tool.
iZoho [updated] - the web-based office document suite specifically tailored to your iPhone. iZoho brings the acclaimed document-editing web-service to the iPhone. With AJAX-y access to Zoho Writer, Sheets, Show, and Creator, any iPhone user can view, edit, and create Microsoft (NSDQ: MSFT) Office-compatible documents, spreadsheets, presentations, and publications. iZoho makes your iPhone a complete smartphone.So, I’ve gotten word from Zoho that the create/edit functionality is not yet setup for iZoho due to issues with the iPhone’s soft keyboard. You can still goto Zoho Writer to get full access to the document-creation application, but iZoho does not currently support it. Keep an eye out for future the next iZoho version to support create/edit features.
Facebook - does it need any explanation? Facebook for the iPhone. It’s quick, it’s convenient, and it’s on your iPhone. Use it, you know you want to - and if you don’t want to, you should, everyone else it doing it. In fact, I haven’t messed with my Facebook or MySpace accounts in a long time, but I think I might just start using Facebook again. I don’t think it’s just a fad… 
Remote Buddy - control your Mac with your iPhone. Kick back and watch movies or listen to music on iTunes. Remote Buddy serves up the interface on your iPhone, so you know exactly what you’re watching or listening to. And, when you want to move on to some more serious stuff, Remote Buddy gives you access to over 95 different Mac apps - it even lets you type text on your Mac through your iPhone’s keyboard. Did I mention that you can activate your Mac’s iSight camera and watch it live? Or how about a live view of your desktop as you move the mouse cursor around? Yea, Remote Buddy is amazing, especially if you attach your Mac to your home-theater system!
Remember, this is Mac-ONLY folks.
Hahlo - the straight-forward iPhone Twitter client, but it sure loads quickly. I like this client the best for those times when I’m on EDGE-only. The interface is full-featured but still loads quickly over EDGE.I just started using Twitter - I know I’m behind the times here. If you want to hit me up on Twitter, my handle is “WillPark” - nice and creative. 
PocketTweets - the prettier iPhone Twitter client, but slower to load over EDGE. I like this client when I have access to WiFi - which is to say, most of the time. The interface is slick and delivers a richer experience than Hahlo - but you pay for it with slow load times.
Good review! Look at this site http://www.appsafari.com
It lists the top 20 user rated app and over 1500 other webapps to choose from. I could spend days trying all this stuff
http://www.floort.com is one of the fastest growing iphone web apps out there. Truly micro-blogging.
If you’ve ever wanted to know all the product details, reviews, and prices of the product you’re shopping for in best buy to make sure they aren’t over charging you…
Check what the … Price.IS from your iPhone at:
http://m.price.is/iphone
http://shop.price.is/
Also ich muss sagen ich finde es nicht schlecht das es Erotik Webadds für das iphone gibt, ich bin der Meinung es sollten noch viel mehr Erotik Portale ihre Seiten für das iphone optimieren. Ich persönlich kann euch 1 kostenlose Erotikseiten die Spitzenmähsieg optimiert sind empfehlen, die eine Seite http://www.erotik-kleinanzeigen.com ist zu 100% kostenfrei, man kann kostenlos Anzeigen schalten, Anzeigen merken, Nachrichten an Mitglieder verschicken und man hat sogar ein eigenes Postfach und vieles mehr.
Free News site designed for mobile devices. Feeds covering US Election and news form around the world. New feeds are constantly added.
I found a cool web app called Mobicue the other day when I was surfing online. It lets you upload photos, videos, audio recordings, and text updates directly from your iPhone from any location with internet access. It works really well on the iPhone, so I’m surprised it didn’t make this list.
iphone.mobicue.com
The ultimate iphone webapp is - http://webappstore.spwire.com. Its a webapp for finding webapps.
Of course it seems the real purpose of the iPhone is porn. There are tons of sites/web apps that are specifically targeting iPhone, e.g. http://www.pureiporn.com, http://www.iphoneporngrid.com, etc. Why doesn’t ATT block the sites or use some BL?
I bought a few web apps for my iPhone yesterday. The cool thing was iBeer, people were so creative it amazes me.
I dig iBeer too Claire! Shazam is still a big fav of mine! Love Amazon Mobile too!
I’ve found some other good ones at
http://www.igoapps.com/search/do_search/popular_all/13/2/1/none
Free app called Storyz, free MMS - brilliant
@ kcjones, i’ve checked Storyz, and i love it, it’s fun and easy to use
i’d also put the shazam app into this list
Family Guy app: ifamilyguy.net
Have you seen the e-Task web app that Apple was featuring? Very cool. http://www.apple.com/webapps/productivity/etask_emaginewebconsulting.html
I also created a mobile web directory you can run right from your iphone. The directory consists of only websites compatible with the iphone.
There is a great new iPhone app called MeetWays that lets you find a halfway point and point of interest between two locations (you can also use your current location and saved locations). It’s really cool and convenient. I used it to arrange a Craigslist buy and it worked great! Check it out at http://www.meetways.com or in the iPhone store.
Hi! Light iPhone version of the popular online ringtone creator Audiko is very cool http://www.apple.com/webapps/entertainment/audikoiphoneringtones.html