See a lot of spam bots that is pretty obvious.
A report user to staff woud be nice, and might help to clean ut the database.
Examples:
dontbew - got a adress to a online store in his homeadress.
! aaPneuspewded - web adress "Naturally Penis Grow Technique"
!aaasza - "how viagra saved chrismas description of generic chewable viagra" LOL!!
Remember, the user in here have a lot of spare time waithing for the render to finish