blog-jacker 

blog-jacker, a person who comments on a blog trying to upstage or out-do the original blogger. Blog-jackers rarely have their own blog- for fear of being blog-jacked themselves

posted my latest fishing catch results on my blog, some blog-jacker git commented by claiming he'd caught the same as me, but they were all a pound bigger

blog-jacker by chilli ring November 7, 2009

Blogjack 

Blogjack is a G rated term for blogdick. Blogjack or Blogjacking is to post your comment under the first comment in a blog in an attempt for readers and the blogger to see your comment before reading other comments in the blog.

To cut in line inside of a blog.

To place a comment in a blog under another comment near the top that has nothing to do with the above comment.

Most popular blogs will have a blog jack or blog dick line see Miles Cole's blogs on myspace for a good example.

BlogJack line starts here

Blog jacking is allowed on some blogs but not on others.

"Mind if I blogjack?"

Blogjack by Miles Cole November 5, 2009

blogjack 

Occurs when two or more people hold a conversation in the comments of another person's blog. Usually the conversation has little or nothing to do with the topic of the blog.
Originates from the term carjack.

OMG I have been blogjacked!!

blogjack by murgatroid May 18, 2007

Blogjack 

When someone steals an idea from one persons blog and puts it on their own.

I blogjacked this from Leslie's site because it was really cool.

Blogjack by NucmedisHot August 17, 2008