Oh god, there's just so many. The ratings keep falling. Stay away if you're:
* Likely to ask a question during a Q&A.
* A member of any underrepresented minority in tech.
* Not into paying out of pocket for a service that, should it go away, would stop every developer in their tracks.
* Embarrassed by outward celebrations of nepotism.
* Someone who doesn't match at least one of the other examples.