Online, I gravitate toward Backpages and Eros, but for print City Pages. I do my best to read the ad, but if I'm planning a trip to the Cities, I just jot down the most essential notes (in case of overly curious housekeepers and other people; I also don't own a laptop so I can't look things up in my hotel room); those are the reasons I'll often ask those questions that've probably been addressed in the ads. Also, a lot of ads won't have things like prices, session lengths, modalities, hours of availability, or even areas of town, so I do need to ask then. And if I have a particularly good vibe from an ad and during the conversation, I'll probably ask about 90-minute sessions, something that isn't frequently offered.