Which sites actively fight bots? (eg. use CAPTCHA s)? Just Pokerstars?

[Traveller99]

I would like to bias my play towards poker sites that actively fight bots. I think it would make sense if the sites would force players to occasionally enter a CAPTCHA (see http://en.wikipedia.org/wiki/Captcha). I’m not sure if any sites do this normally yet for all players (I doubt it), but I came across a post, which I found interesting as it suggests that Pokerstars does this (maybe with some criteria to trigger the CAPTCHA ?, or is it random intervals for all players ?)

So my question is : which sites are known to be the most pro-active against bots ? Is it just Pokerstars doing this ? (and if so, they will tend to get my business)

[questions]

WSEX seems to be pro-active about banning bots.

[ALLEN BOND]

Ooooooooh Party Poker....Pa Pa Pa Pa Pa Pa

[Nick-Zack]

I would stay off the bot cheaters' site if I was you. In the past people have had account troubles when cookies from there have been detected.

[cbloom]

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WSEX seems to be pro-active about banning bots.

[/ QUOTE ]

and non-bots

[sdfsdf]

partypoker makes you enter those things, at least they did when last year when they were open to US

[MyTurn2Raise]

partypoker and pokerstars have both used these during my play at their sites

[Sciolist]

[ QUOTE ]
partypoker and pokerstars have both used these during my play at their sites

[/ QUOTE ]
I've heard about them at Party, but have never had one. Do they still do them?