bitcoin.com

You must not have visited the site lately. CampBX has lost all ability to transfer to fiat. [Edit: It didn't occur to me at first but CampBX is probably great for buying bitcoins, just not for selling and cashing out.]

Coinbase is great.

Localbitcoins is crawling with law enforcement looking to bust unlicenced exchangers so don't offer your coins or cash as a business or service, only for your personal purposes. I am just staying away from there completely.

MC

I'm not sure if someone already answered this further in the thread, but allow me to offer this. If someone wants to prove something regarding your communications with another party, having proof in the meta data that you did indeed send or receive email from a person's account goes a long way toward making their case.

If your spouse says you had an affair or your boss says you shared trade secrets, and an attorney can compel Gmail to reveal that you were regularly emailing the party in question, then they have a lot more leverage than with out such data.

Reaching your email via Tor protect you from anyone knowing where you visited and keeps the visited website from logging your IP and identifying you.

Money Changer

Hello World!