That's right and they simply look for keywords on my various online profiles and send me the standard "I'm really impressed by your experience, I think you'll be a great fit" message, even though 50% of the time I'm clearly not a great fit. Why do they get this wrong? Because they are "are bottom-of-the-totem pole, lowest-common-denominator bottom-feeders" to quote the parent post...
PS - I wish it weren't so.