http://ping.fm/MRjm0
Now iPhone and iPad users can take wireless print from thousands of printers by using a new jailbreak tweak available in Cydia. The tweak name is TruPrint. The TruPrint tweak is only installed on jailbroken iPhone or iPad and then you can use all printers just like native iOS printing. By using this TruPrint tweak you can take wireless printing without need of computer right from your iPhone or iPad.