ChirpIt for Android: Update Twitter, Facebook, and Foursquare from one place. The free version has ads.
Update multiple accounts, including Facebook Pages you manage, on every network at the same time. Check-in, tag friends, upload photos.
ChirpIt updates each network directly so your friends aren't redirected to another site when they click on your post.
More networks will be added soon as well as uploading to the cloud make updates even faster.