LF: I’m not familiar with the ad in question, so I can’t comment directly. I’m not going to make judgment calls on other people’s sensitivities, but if it was up to me I would guess that a girl in a short-sleeve short or shorts in a tiny 4 square-inch ad isn’t going to ruin anyone’s Ruchnius and could bring people to Yiddishkeit.
The reason even Frum Kiruv places are willing to show not-Tznius girls is because they want to give accurate representations of what their programs are. First of all, it’s more honest. And secondly, they don’t want people who wear short sleeves or whatever to feel uncomfortable going on the program.
That being said, people should be smart about ads. Most people using this site are quite Frum and would probably be more sensitive to such things than the average Birthright person. So YWN is probably not the place for such an ad, because the ratio of people who are offended to those who would be interested is probably very, very high. So while I could hear the claim that the ad in general is worth it, putting it on YWN probably isn’t.
I edited Little Froggie’s post, but he described the ad as worse than short sleeves. -100