Free Edition
This app only works with phones that have root/super user access (e.g. the Development Phone). This app tethers your cell phone's Wifi internet connection to your PC. The connection between your phone and PC is a bluetooth PAN connection. Please visit http://www.androidactivity.com/tetherBlu.html before installing!
This is the Free version which will only work if you have a wifi internet connection on your phone. If you want to tether the cell internet connection try the Premium version.

Brazilian users only
Aplicação que gerencia as operadoras de DDD. É uma aplicação para facilitar o uso do celular evitado que tenhamos que ficar digitando a operadora toda hora que vamos fazer um DDD ou quando estamos em roaming.
Basta digitar o 0+DDD+número que a aplicação se encarrega do resto. Quando vc estiver em roaming e desejar fazer uma ligação para seu DDD de origem basta digitar o número, não é necessário colocar 0+DDD.
Versão 1.1.0:
- Novas opções, ajuda e registro. Bug corrigido.

Liberate your media with Pixelpipe and get your photos off of your Android powered device and out to your favorite social network, micro-blog, photo/video and blog services. With over 60 supported destinations from around the world to choose from the choice is really yours. Free your media and share your life.

Flickr, Facebook, MySpace, Picasa, twitter, blogger and many more

PingDroid is a Google Android application that allows you to use Ping.fm from your Android phone. You must have a Ping.fm account to use this application. If you do not, please sign up for Ping.fm first since you will need your Ping.fm mobile key to use PingDroid.

Twitli 1.80.
Includes showing tweeps on a map, auto update your Twitter location, translation, etc.

Twitli is a lightweight Twitter client. To use Twitli you need an account at Twitter.com.

Features:
- photo upload to Flickr or Google,
tweet the resulting link
- geolocation based on gps or network
- translation
- DM and @reply
- view friends timeline, @replies,
DMs or a user's timeline
- easy follow and unfollow
- supports Laconica