erratic is on the money yet again. sorry, but no matter how you slice it, the very term "straight acting" IS homophobic nonsense. to merely point that out, as well as the obvious reasons why certain masculine semi-closeted gay men tend to identify with it (hint: the immense social advantages that come with not being obviously gay, or not being one of 'those' (disruptive) gays), is not to unfairly stereotype these men. masculine guys, particularly straight ones and those who pass as straight, are, as a general rule, viewed as special snowflakes and individuals, so contrary to some of your (actually very typical) responses, they are not in danger of being victims of oppressive stereotypes. i am sorry that some of you (dong-in-khakis, bigbadger) seem to feel otherwise.
to address some of the other posts above, it does seem to look like more guys are now stating preferences for masculinity rather than "straight-acting" men, which is obviously far preferable terminology. i do giggle at the m4m ads/profiles stating how "masc" they are (and usually prefer) though, as theyre usually made by people who seem profoundly insecure. (also, wtf is this stupid "masc" abbreviation? do people actually say that out loud? it sounds dumb as hell.)