What with the "Real estate investor seeks trainee" signs

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Hey guys and gals, 

I'm new to BP and have been ferociously consuming the content on the site. This is my first post and I have a silly question. Much like playing the "slug bug" game, once you start looking for VW bugs you see them everywhere. Since I've been studying investing I find myself seeing properties and signage like never before. One thing I've noticed is that it seems on every corner of my town (Phoenix, AZ) there are signs that read something like "Real estate investor seeks trainee, earn while you learn, unlimited income, starting at $120K a year". Things that sound to good to be true, usually are. I'm not looking to leave my job for full time investing. So these signs aren't appealing to me personally, but Im just really curious about them. Does anyone know what's up with advertisements like this?

Lauren