If I say something other members don't like, can I get booted off the site?

Everyone is able to Alert individual posts and identify whether they're spam, offensive, off-topic, or other.

Use of foul language repeatedly, obvious racism, and spamming the boards can get you blocked from the site. But in general, if you're reasonable, respectful of your peers, and generally act in a professional manner, you'll never have to worry about it.