I allow genasi, but not drow. I like the genasi as elemental based people. They are cool. Their inclusion also adds another strength bonus race into the mix. I dislike Forgotten Realms drow, and have no place in my world for them as written. I replaced them with a third branch of the elven family tree known as the Sundered. They are pale skinned, pink- or red-eyed elves that live in the deep caverns. Sure, they are kind of like drow in a number of ways, but the slight reskinning (pun intended

)makes me happier. Their society is less stupid and self-destructive. I swear drow would have to have litters of babies to avoid extinction – what with all the murders, child sacrifices, and casual killing of underlings, not to mention what adventurers routinely do to them.
I've been averaging about 18-30 damage a combat due to Bloodclaw. Basically, one healing surge.
Since in most LFR adventures, I use about 1-3 healing surges per encounter, 3 encounters per adventure and I have 9 healing surges, I'm not too worried about using up surges. As long as I have a cleric around healing me instead of just spending them myself, the damage is inconsequential.
It's not the total damage that is necessarily the issue. In our particular group, the warlord's player dislikes the thought of having to use his very limited healing resources on healing self-inflicted damage. Total surge numbers hasn't been too much of a problem as of yet (although it will be in an upcoming series of encounters), but the number of healing powers we have at our disposal (at level 5) in one combat is around 3, if we burn the MC cleric's daily use of Healing Word. Then there are potions (limited resource), and Second Wind, which to paraphrase Radio Free Hommlett, may as well be a dwarven racial power in the eyes of some of my players. They do use their second wind when it is needed, but they hate doing it. Bloodclaw is a possibly overpowered option (with 2 handed weapons) that exacerbates our lack of strong healing in this particular group, so I'm going to disallow it. Besides, I'm married to the player of the TacLord character, so maintaining good relations is important.
Well, the MM section starts with a disclaimer 'use at your own risk' and stresses they've included the stats primarily to create npcs.
I have no idea what's going on on the CharOp boards because I refuse to visit them. I only hear about them if someone here mentions them. If I ever caught a player trying to use one of their infamous rule-twisting builds I'd probably kick him straight out of my game.
I'd allow any races that received a new writeup, like minotaurs, but nothing straight out of the MM. The dragon writeups have been rebalanced to be on par with the PHB races.
I agree on the MM race writeups, which made it easy to not allow them. Minotaurs and Warforged were rebalanced when they received full character race writeups, but I still don't feel either of them fit as PC's for my game. YMMV. It's flavor, not balance.
I read the CharOp boards to let other people do my research for me. Is there some new feat or item shows up in 3/4 of the builds posted there? If so, I am tempted to ban or houserule it on the spot because it is highly likely to be broken. Why should I spend a lot of time worrying about broken combos when I have all these people doing it for me? It's a useful resource.

Besides, some of the builds get me thinking about stuff in a different way, and that's all to the good.