Deliveries ($1.99): You know when you order something, you want it now. At least I do. I stalk the UPS/FedEx/DHL tracking pages constantly, and this makes it ten times more easier and convenient. I also use it to track things I've shipped to other people to make sure they get there alright. You can track packages from all sorts of places. The ones above happen to all be from UPS, hence the brown color scheme.

eBay (FREE): eBay gets a bad rap nowadays, but I still love it. I get things for cheap, and sell things for more than I could anywhere else. Anyway, this app allows me, at a glance, to check auctions I'm selling, watching, and bidding on. You can even bid from the app and search listings. I used to have to find a computer to bid on an auction I knew was ending at a certain time, now I can do it from anywhere.

Summizer ($2.99): Twitter trends come to your iPhone. Trends are a great way to see what's in the news. Summizer not only shows you the current topics that are trending, but you can search Twitter as well, and save certain searches. It lets me know whenever someone mentions "Virginia Tech," "Blacksburg," and others I have set.

Twitterrific (FREE): My Twitter client of choice on the Mac and the iPhone. There are many others out there that people seem to prefer, but 2.0 is coming out soon for the iPhone and it sounds awesome. I like how you can easily reply to tweets and DMs, and TwitPic and web browser integration is very convenient. Plus it can load up to 200 tweets at once for when you need to catch up.

iSSH ($4.99): Imagine being able to SSH from your iPhone! iSSH saves connections, so at a tap, you can connect to your home computer or even your web server. So much can be accomplished via the terminal, like checking cron jobs, editing a website, starting a video encode, and I love being able to do it when I am out and about.

Yes, some of these aren't free and people seem to be against that for some reason. But these cost less than a lunch, and will last much longer and be more useful than a single lunch. You won't miss the few dollars, and you'll feel good about supporting these talented developers.

What are some of your favorite iPhone apps?