HU: I sit down, they sit out NLCASH

[MHunt]

On FTP, *VERY* often when I sit down at a HU table, the other person immediately sits out. I don't play that often, so unless he has done extensive data mining, he should not know anything about my skills, good or bad.
Looks like a lot of people sit at several HU tables, just taking up space rather than actually playing.
I have been trying to figure out why, since there must be a reason. Are they targeting very specific opponents or what ? Can anyone clarify ?

MHunt