People in this thread should be careful what they wish for.
If you seriously think that it's a good idea for the sites to closely examine how they should discourage players who 'ruin game quality' you need your head examining.
Poker site economics is pretty simple. The ideal player from their point of view is a bit like a shill. Plays lots of tables to keep games going; breaks even against the rest of the players, slowly loses it all to the site in rake.
Winning players are bad for sites. They take money out of that site's economy that otherwise would eventually flow to that site in rake.
The site may have even to start advertising more to replace the losing players that all sites depend upon (ultimately) for their income.
The site doesn't really like or want winning players. They are all parasites so far as the site is concerned because they make the site split the profits with them. That is why if you are a skin on the ipoker network you get ejected from the network if your players make a net monthly profit.
And that's why,with the reduction in competition that came with the UIGEA, US sites basically suck RB wise. Stars has a FPP system that absolutely sucks for SSNL cash grinders, FT gives you all of 27% RB (oh woot), whereas, over in Europe where no duopoly exists to squeeze players, RB of 60% or so even for a small volume casual SSNL player is a real possibility.
So far as the sites are concerned the higher your aggregate cash winings, the worse you are for them and the more they want to encourage you to leave.
Most shorties at the stakes that matter to the sites (SSNL and maybe $400) have tiny win rates (if they win at all). They are pretty close to the ideal shills in many cases. The real villains in the sites' eyes are the biggest winners - who are very likely to be some of the same 2+2 MT HUDding regs who are in this thread crying out for the banning of shorties (although I appreciate some of you will be more like FGators!
)
Let's say FT does something that actually removes shorties from the pool. Beware of unintended consequences. How long before they (perhaps having had a friendly chat with Stars first) start deciding that good full stack MTers are they next ones to target to increase their profit?
As I said, I'm only a small volume player and I play on Euro sites anyway, so this is unlkely to make much difference to me, but I very much doubt that this is going to play out in a way that is going to make very many posters in this thread happy.