Craigs Mobile List allows you to access all of Craigslist.org from your iPhone.

Price: $0.99
App Store Link
Developer Link

UPDATE To CraigsMobileList:
CraigsMobileList is a simple and intuitive application that makes using Craigslist a pleasure on an iPhone or iPod Touch. By centralizing the entire browse and search experience from a single homepage, Craigslist is made much easier and faster to use. And with the ability to customize saved search and browse settings, pre-populate email responses, and save recent locations, you have a program that truly provides value to one of the most popular sites on the web. For the past month and a half we have been in the paid app top 100, moving up to number 56 after 4 weeks in market.

The new update, v1.1, addresses many features requested by our users, such as:

- Support for pictures in listings
- Improved UI
- New font
- Recent locations remembered
- Added subcategories
- More locations
- Ability to name bookmarks
- Save search terms within bookmarks
- Restore previous search settings automatically
- Filter improvements
- Faster search load times
- Assorted bug fixes

CraigsMobile iPhone App Review