Very few guys on those sites in the bigger scheme of things are engaging. Most are a snooze fest, just lounging around, giving you nothing, while they listen to music or constantly check their phones, and letting you let at their messy, sloppy rooms. BORING, even if they are pretty or hot, that wears off after a few minutes.... They beg for tips, but dont wanna give you anything for it. Ocassionally you will come across a gem who KNOWS how to work the crowd and make those coins.
Those will be the ones I gravitate towards.