Was browsing the app store and came across 2 gems worthy of any iphone. The first is Just Update, it’s a barebones twitter client, simply for sending tweets and nothing else, the advantage of it is it’s much faster to launch than any full client and gets you tweeting straight away, even provides a list of your followees so you can send replies or DM them. The other App is Locly, which allows you to get information about your current location, local twitter tweets, local restaurants, local Flickr pics, Wiki pages, pubs and more, works really well, even in non-US regional areas.