Not read all of this thread, but in general happy to count myself a "militant" feminist and to say YAdefNBU.
I hate the way the sex industry has permeated all walks of life. The fact that I'm not particularly surprised by this says it all (to me, anyway). It's actually pretty boringly normal, in a horrifying kind of way, sex sells and the ridiculous/tacky/trite nature of it all, against a backdrop of Nuts/tiny prostitute fashion, and the rest, makes it even more depressing. IMO, it's reducing sex and women down to tits and ass and nothing much else.
As an aside, one thing I wondered about was whether what Ann Summers are doing is strictly legal within the context of licensing law. Any licensing lawyers out there? Would this be some sort of "live show" requiring a public entertainments licence (albeit probably only a "one off" licence)? My initial thought is that a live display of cavorting around goes beyond mere "shop" use. If it does need to be licensed, and they haven't, then this is illegal. If they have obtained a licence from the local authority/licensing authority, you might want to complain to that authority for allowing it, if you feel strongly enough about it.
Also, if the shop itself is within a shopping centre or similar (ie, Ann Summers don't own the building) there's every chance that the display may have run contrary to the terms of Ann Summers' lease. In which case, again, if you feel strongly enough about it, contact centre management/the landlord. Shopping centres especially are keen to promote themselves as family friendly destinations, live semi-pornographic shop displays don't really tally. From my own experience of shopping centre landlords, many have tried to resist having shops like Ann Summers but have been unable to prevent them (for boring legal reasons I won't go into). They may welcome a few complaints.