5 contract clauses that cost people thousands (and how to spot them)

After analyzing hundreds of contracts, here are the sneaky clauses I see most often:

1. Unlimited liability — You're on the hook for everything

2. Auto-renewal with long notice periods — Miss the window, locked in another year

3. IP assignment on "work product" — They own everything you create, even unrelated stuff

4. Non-compete buried in NDAs — Can't work with competitors for years

5. Unilateral amendment rights — They can change terms anytime

Which of these have you encountered? Any I'm missing?