BugMeNot is a community supported database of login credentials. You can use BugMeNot to find usernames/passwords for websites you do not want to sign up to.
Hide My Ass! is a free proxy service. By serving as a middle man between you and the internet, it allows you to surf online "anonymously", "hide" your IP address, and protect your "privacy".
OpenDNS is the fastest publicly available DNS provider. They also provides features such as misspelling correction, phishing protection, and content filtering.