App Name: Words With Friends

Description: A scrabble-like game where you play against opponents online to see who can create the best words for points. You can host a huge number of games at one time and just recently they added the ability to link your Facebook account to the game so you can play on Facebook or against Facebook friends. Game has a huge reach, notification (or lack of) of moves is still an issue for the game.

Cost: Free

Developer: Zynga

Reviews:

Words With Friends – AndroidTapp.com

Words with Friends Android app review  (video) –  LifeonAndroid

Words With Friends Free for Android is good, but far from perfect – Androidapps.com