The Golden Age of Bumhunting is coming to a close.

I guess it probably started a year or two ago when Stars' legal department sent around a letter telling the major hand history sites to stop selling their hand histories. After years of playing cat and mouse on how to stop datamining, who knew that's all it took? If you can't "clearly" see who the bums are, it makes it harder to hunt for them, no? So if the leader can stop datamining, then so could everyone else... if they wanted to. Of course, there are other ways to identify the fish, but I don't want to derail my own post.
But more recently, there have been FIVE more developments that are making it more difficult to bumhunt:

1. Segregation. I had thought the goal of segregation was to have players of equal ability play each other, to generate the most rake possible. But at least at Revolution, one of the factors in determining your tier seems to be whether or not you bumhunt. People who do no table selection seem to be more likely to have a large selection of tables. Of course segregation is going to be implemented differently across sites, but I thought this was an interesting concept. Because why would a site want to discourage winning high volume players who do no table selection from playing? Win rates are going to get lower over time anyway... you're going to need horses to keep the games going. The people you don't want are the guys who get 50-60+% rakeback deals playing a minimum number of hands and taking a disproportionately larger amount of the site fish's money. And most sites have been cracking down on the skins offering such deals.

2. Increasing availability of Zoom/Rush/FastForward/Speed tables. When you join a pool of players, you can't pick and choose which ones you want to go against. It used to be just FT had this game. Now all of the top 4 sites do.
3. Table Starters. Stars seems keen on implementing some anti-bumhunting measures - Zoom at higher stakes and table starters have already been implemented, and it should be interesting to see what other measures will be implemented (ie table camping, ratholing, grimming, etc) after the spring meetings. Table starters removes some of the selection process in sitting at a table.

4. Anonymous tables. iPoker recently added anonymous tables to their mix. Bodog had been offering anonymous tables for years and have been doing very well. Obviously, if you have no idea who you are playing with, it's harder (not impossible) to bumhunt.
5. Crackdown on skins offering regs high fixed rakeback. Most sites now are going to an increasing rewards structure. iPoker and some of the US sites have already done this. Because who wants a bunch of low-volume bumhunting regs on their sites?
So to summarize the status of the top 4 poker sites:
1. Stars - started implementing Zoom at higer stakes and table starters
2. Party - segregation
3. iPoker - introduced anonymous tables, but they may not take off
4. Full Tilt - owned by Stars

So you can still bumhunt in the near future on the lesser sites (and maybe iPoker). And even on the above sites, you can still find ways to to "aggressively table select." But in many businesses, you'll find that wherever the leaders go, the rest of the industry follows. And the trend against bumhunting the past few years has been clear.
To be continued (much later)...