Adam Pash, formerly of Lifehacker, recently switched from iPhone to Android, but his phone number is still tied to iMessage, preventing him from receiving SMS text messages on his new phone from iMessage users. According to Pash, Apple support informed him that engineers are working on a fix for the problem, but don’t currently have a reliable solution.follow link
Avoid Simple Typos
If, like me, you find yourself typing 2911 in place of 2011 entirely too often, you can have Mac OS X (either Lion or Snow Leopard) fix such typos for you automatically. Just open the Language & Text pane of System Preferences, click the Text button at the top, and then add a text substitution by clicking the + button underneath the list. It won't work everywhere (for that you'll want a utility like Smile's TextExpander), but it should work in applications like Pages and TextEdit, and in Save dialog boxes.
The iMessage Trap