Yes that includes fat people. Yes, that includes insulting someone's intelligence.
Phrases like "addictied to cake" are asshole-ish and makes a mockery of how hard people have to work to lose weight and the pressures they deal with while going through that struggle. Believe it or not, some people are meant to be a larger size than 6.
That being said, making fun of people's spelling might fly other places but it's stupid. Especially in a community with so many international posters. It's very elitist to expect everyone across the globe to speak just like you do. Plus, it's livejournal, not a freaking term paper. You should chill with that. If you still understand what is being said... let it go.
A cake addicted moderater