I fairly often happen across forums spammed with messages such as:
Arugula (Eruca sativa) is an quarterly green, pretended or roquette. It's been Traditional times, overclever 20 flat has be useful to "foodie" movement.Before impediment 1990s, thrill was norm harvested foreign wild. Colour has naturalized reactionary world, on top of everything elseloftier Europe addition North America. Arugula is all round Mediterranean region, wean away from Morocco and Portugal, eastern Lebanon plus Turkey. Roughly India, adult seeds are songeffortless Gargeer. Solvent is scour (Brassicaceae) family, rod is quite a distance rocket, which is public ...
What is the purpose behind such spam? It's annoying, yes, but one assumes that the spammer has some purpose other than to simply annoy to go to the effort of doing this. I don't see any URLs or hot links in the message, and no apparent "funny" formatting that might exploit something.
Is this somehow trying to influence web crawlers? (And, if so, to what purpose?) Does it somehow exploit some sort of weakness in the forum software? What?