[App.net](http://alpha.app.net) seems to be really growing recently. If you haven’t taken the plunge yet, there is now a directory of clients to help you make some initial choices[^f5550].
[^f5550]: I have no strong preference for any of the various ac clients, but for iOS, I strongly recommend *Netbot*, available of [iPhone](http://click.linksynergy.com/fs-bin/stat?id=r*bqlTuiXSo&offerid=146261&type=3&subid=0&tmpid=1826&RD_PARM1=http%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Fnetbot-for-iphone-app.net%252Fid563595132%253Fmt%253D8%2526uo%253D4%2526partnerId%253D30) and [iPad](http://click.linksynergy.com/fs-bin/stat?id=r*bqlTuiXSo&offerid=146261&type=3&subid=0&tmpid=1826&RD_PARM1=http%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Fnetbot-for-ipad-app.net-client%252Fid563596528%253Fmt%253D8%2526uo%253D4%2526partnerId%253D30). (Affiliate Links)