The best
I have got at least 10 iPhone quote apps and this one is by far the best. You can easily share by Twitter, email, fb..., the choice of quotes is very large, you can filter them as you want, and last but not least they update their app frequently and they listen to your advice! If you like quotes (in English) dont hesitate !
SusyH2504 about
IQuote 2.0 - World of Quotes