Thanks to Wendyknits and miss violet I have been plurking for a few days, and it's fun.
Basically it looks like a timeline and you can type messages and people respond.
It's instant (like instant messaging) and you can type whatever you want:
thechickswithsticks (thinks) plurk is addictive.
One fun thing is that Wendyknits released a sock pattern only to those on plurk--so fun!
So, if you'd like to give it a shot-- follow this link here to join as my friend!