The problem with most legit dating sites (like Match and POF) is that the girls want REAL relationships. SAnd that is mostly a problem for us married guys. The girls that are okay with married guys are the proverbial needle-in-the-haystack. In contrast, those on sites like SA know the score from the beginning and typically are okay with secrecy & discretion.
I also recall that the legit sites prohibit fake or pixelated photos, which some of us use to keep your anonymity. And almost no one will consider the profiles with no pics.
When restrictions are lifted, I may give AsianFriendFinders a try. Asian girls tend to ask fewer questions than non-Asian ones.