If you meant people(mostly newbies) who are copy-pasting random articles and adding the source link at the bottom, as far as I know it's legal(which is kinda reasonable). Freakin annoying most of the time though; I'd be completely fine with it if the poster at least gave his/her thoughts concerning the topic. But no, like 90% is just straight-up copy pasting content just in the hopes of earning merit.