Do many people do this? I've observed many many people who join my room on a team game then just leave. I've suspected that they saw my someone intimidating stats so they just left. Do you guys do that?

I often check stats, but will only leave if an opponent has significantly fewer games than me, or a significantly lower win rate (in 1v1) than me. If they have the same number of games or similar win rate, more games or a higher win rate, then I stay.

I check stats, not to be intimidated, but to avoid playing with someone that I don't think I would enjoy playing with.

First and foremost, what is the boot percentage. I will not play with anyone over 15% unless it sneaks up on me. I'd rather not have a 1/7 chance of them skipping out.

Also, if they have less than 35% wins in any significant category of 1v1, 2v2, 3v3, that means that they haven't masterd the basics yet and don't know how to play on a team.

What makes WarLight fun is playing with competent people and working together as a team. If you don't do either of them, then you will likely have a high boot rate and very low win rate.

Why join a game if its not going to be fun? While I in no way advocate that I am an elite player, but I'll stick around til the end and work together with you as a teammate.

I always check the stats before join a team in real time.

I usually check stats just to see what kind of game I am in for. Knowing that the opponent is 80% in 1v1 verses 45% makes a huge difference on how I'll play it out. I don't mind playing against someone with a low win rate, as I realize that it'll give them more opportunities to learn, and sometimes it's fun to stomp somebody without using a lot of thought.

And as John said, I like to avoid people with really high boot percents, because games that end in boots are much less fun.

I agree with all of the above.

But a next question would be: do you, as a game host, sometimes remove players from your game because of their stats, other than boot rate? (assuming the flaw of those players were not covered by the open seat prerequisites)

A lot of games have pre-requisites for joining that require certain win rates, boot rates, etc. It seems silly for a host to manually remove someone for poor stats when he or she can prevent that player joining in the first place.

For instance, none of the games that I create allow high boot rates (I generally put 8% as the max allowable). Although I don't normally put down a min win rate, I do almost always put down 50 games completed.

Sorry Moros, I didn't read your () section. I rarely check on the players who try to join my games. I also don't remove players who joined, just because they are not ideal. It seems rude to push them out. If I feel strongly about it, I just remember the next time to include whatever requirements that I overlooked.

i barely check stats but before i join a tourney team i check only boot rate

boot rates must obviously be checked, booted players only a nuisance.
other then that, if it is a 3v3 for example, and my would-be-team mates have very low win ratios, and my opponents high win ratios, it would become a 3v1, which is too much trouble and too little fun generally.
in FFA i don't realy care, my opponents might be better, but never by so much i wouldn't stand a chance, it's about luck and using that luck in a FFA.