I think hoodoomeister is right.
massageplanet.netites are probably more respectable than non-massageplanet.netites and most guys in general that walk into these spas aren't anything special. If an attendant can find a guy who is sober, decent looking, clean, and respectable those are the types of clients she wants coming back (or at least items 1, 3 &4 on the list).
I've had attendants tell me some stories of the druken, dirty, unrespectful slobs that can walk into the spa that they have to have a session with. They may either puch too far on the extras, pass out on the table, stink to high heavan, etc. Can't blame them for wanting to find a hidden gem of a client.