One of my favorite things is when I'm browsing facebook and someone sends me a note in the middle of my session.  I love this because I can send one right back and about 90% of the time it turns a medium that is the equivalent of email into an awkward instant messaging program.  Nothing passes the time like clicking refresh every 10 seconds to make sure you didnt miss the last message.  The only real problem is that facebook sends you an email every time you recieve a message on facebook, so if you have a 20 minute conversation, your inbox looks like this:

Needless to say, I was suprised at first to see that I had 29 new messages when I had just checked my email 20 minutes ago.  That feeling was soon depressed by the dissappointment that 28 of them were from the conversation I had and the other 1 was from a lady who claims to have intimate knowledge about the size of my what-nots and would like to sell me some drugs.  What would I do without you facebook?  I'd probably have no reason to have an email account at all.  I've gotten to the point where email is just a convenient way of knowing everything that happened to me on facebook.