On Friday, Kootol Software announced that it sent notices of the
alleged patent infringement to a variety of companies you may have
heard of; in addition to Apple, Kootol sent letters to Yahoo,
Google, Microsoft, Amazon, AOL, Facebook, Twitter, Nokia,
Foursquare, IBM, LinkedIn, MySpace, RIM, Quora, Salesforce,
Twitpic, Ubermedia, and iOS and Mac software developer The
Iconfactory. Those last three companies all make software that
integrates directly with Twitter.