Sentence:  "I liked the idea of people who don't really know each other except through short messages getting together and meeting for the first time, putting a face to a name, and also telling people how much I enjoy reading their updates," said Tim Lara, Twitter user @timothydanger. "Meeting new tweeps was nice too. I gained a couple of <WSD>tweethearts</WSD> since then and enjoy the banter. (My twitter is never serious)." 
Meaning of the word marked with <WSD> tags:  A Twitter user who is one's personal friend or within one's broader social networking circle.