The Blog - a personal log enabling complete personality transformation
Blogger - an infernal chatterbox (verbal dysentry syndrome)
Blogging - boasting about one's Blog (usually associated with NBBM below)
Bloglet - a small Blog for those with short attention span
Blognostic - site metre obsession
No-Billy-Blog-Mates - empty site metre
Blogeur - a Blogless saddo who reads other minds
Blog-anony-coms - a Blogeur who is too ashamed to leave a name in the comments box
Blogist - an eloquent Blogger
Blogitis - inability to stop Blogging (see a doctor)
Bloggart - 'my blog's bigger than yours'
Bloglust - also known as Blog Envy
Doubleblog - a show-off who runs two (or more) Blogs at once
Blogery - theft (sometimes known as 'Blog This')
Blogot - 'you couldn't blog if you tried'
Blogspot - Blog acne (teenage Blogs only)
Blog brothers - male Blog bonding
Blog Sisters - a little piece of heaven!
Did I miss any?