Only a hard up hooker advertises "24/7" avail. Probably a heroin/crack addict. The other girls, here, could be more exact I'm guessin

Not going to post the ad itself but there has been a mediocre looking provider posting on backpage (pics anyway) that has listed in her ad "I never sleep".

Hard to find in a provider, one that NEVER sleeps. Just found that really funny for some reason.

Just so it is clear I was being sarcastic, the pictures in the said ad are so unimpressive I wouldn't care if she gets 8 hours of sleep every night, I wouldn't see her.

My guess was that it was some kind of rob ad, that there was some group of creeps who were, at least one of them, always up and ready to take a call from some poor sap/ victim but you are probably right with your guess.

Perhaps she's now an undead hooker...