grandpa - 3:41 pm on May 10, 2010 (gmt 0)
You may also have noticed that from the second post in any thread and continuing forward, your own post in that thread will be a different color (I'm seeing green for my own posts). I can understand where this might be an advantage, but I would personally like the ability to disable the colorization (all of it).
It appears to be a system [ total number of messages ] counter.
# number that every user has as the last bit of info on their user stats