"Once they've turned every available inch of their account into one big, obnoxious ad for themselves, the Shameless Self Promoter will then go on the offensive. They may go slowly at first, one piece of ego stoking Self Insert Fic here, one link to their boring website there, but eventually they will get to the point where they'll be starting whole threads based on some piece of crappy Fan Art they drew or Emo poem they wrote. These threads will typically go on for several pages (with half the posts being by the self promoter) and will only end when the Shameless Self Promoter stops getting praise and goes off to advertise themselves in a thread that people actually care about." — St. Duckluck the Humble, Savior of the People. 
That's pretty much all that needs to be said about blogs and the people who keep them.