What's a Poke?
No, we don't know what it means to 'poke' someone, any more than Facebook do. We do, however, let you arbitrarily Verb people. The link to poke/hug/tickle/verb a person is located on the same page as their profile. Pokes do trigger email notifications, just like normal messages.

What's a Poke War?
A poke war is the online equivalent of a pillow fight. You can normally only poke someone twice in a day, unless they reciprocate, in which case, you may indulge in poke-warfare. Scores will be kept.