What are some of your "must have" apps for the iPhone?

Can't live without Mobile RSS

Aside from Facebook, LinkedIn and Twitter (I use HootSuite as my Twitter client because it allows me to schedule my tweets), here are a couple of not-as-well-known apps that I find useful:

- GoodReader

It's a great, all-purpose document reader. It lets you email PDF files, PowerPoint decks and more to yourself and read them on your iPhone. It also has a great, easy interface.

- Adobe Ideas

This free app lets you draw free-form on your iPhone's screen - perfect for capturing your doodles that you later want to turn into big ideas for your business.

- QR Scanner

This app lets you take a picture of those ubiquitous QR codes that you see on more and more ads, outdoor advertisements and magazines.

- Instapaper

This fantastic tool (not free) let's you bookmark content you find on the web and save it to your own personal repository to read off-line later. You can also subscribe to some longer form web sites (like The New Yorker or The Atlantic) or popular blogs (like Seth Godin). Whenever I need to fill in a gap in my day with interesting, useful information, I always click on Instapaper.

- Box.Net

Ever wish you could throw your electronic "stuff" in a bag and take it with you all the time? Box.net is just that, a place for your stuff in the Cloud. You can upload any type of digital thing to it and access it later from any computer, including your mobile phone. It's an indispensable business tool.

Best,

Steve