I believe in Jesus Christ, my Savior. If you do too, and aren't scared to admit it, then copy and paste this into your signature.
I see some excellent ideas here. Keep 'em coming!
I tended to use "LOL" a lot myself. I think it's fine in chats and text messages. I am however, trying to wean myself off it because I found myself substituting it for sentences when I didn't have anything to say. Now I use a smiley, or "I see", or something of that nature instead.
