When a blogger gets all high and mighty and posts something that has them come off as tough and/or cool. Being bloghard usually consists of bashing other peoples blogs, bashing celebrities or musicians, or bashing common opinions without any real reason all from the comfort of their own living room.
"Hey did you guys hear that Brittany Murphy passed away?"
"Late pass dumbass."
"Whoa someone is a little bloghard, sorry I was trying to make conversation."