They are really only useful for putting a gold star on your character sheet, and not for effect. I thought the comment about min-maxing for combat was a tad silly. I've been playing a skills-oriented character in the World's Largest Dungeon. I do my best to stay out of combat, but nevertheless, I don't like +2/+2 feats. It's like Toughness. It might help at low, low levels, but the DCs you face at mid- and high-levels, not to mention epic, are such that a +2 is usually worthless and this is especially true of opposed checks. I think Skill Focus should grant a bonus that scales with level, because a +2 just doesn't mean very much once you get beyond low levels.