For the quote lover in all of us, Quotebook 2 is now out with iCloud and Instapaper's Launch Center support.
You can utilize iCloud to sync quotes between your iPhone and iPad, or you can share a quote via email, iMessage, Facebook, Twitter or Tumblr. You can add quotes to Quotebook using Instapaper's Launch Center.
A neat addition is auto detection. Copy a quote, and Quotebook will recognize it from the clipboard. A search has been added, with connections to Wikipedia to find out more about the source.