Source: http://feeds.gawker.com/~r/lifehacker/full/~3/389114646/yahoo-oneconnect-brings-free-sms-to-your-iphone
iPhone/iPod touch only: Yahoo OneConnect is a free application that brings a handful of communication and social networking tools to your iPhone or iPod touch. Off the bat, the most notable thing about OneConnect is that it supports sending SMS messages to contacts in your Yahoo Address Book (provided you have a phone number in their contact card). That means you can text all day long from your iPhone (or iPod touch, if you have a Wi-Fi connection) without taking any texts away from your meager AT&T SMS plan.
The app's Pulse feature also supports a ton of social networking sites, from Facebook and Flickr to MySpace and Twitter. (Oh yeah, it works with Yahoo Messenger contacts, too.) It connects to and retrieves contacts from every single service, and you can update your status on all supported services from one box. Aside from all the functionality, it's also one of the more slick apps we've seen. OneConnect is a free download from the iTunes App Store, requires a Yahoo account to use.
