Disqus is a great community posting site that lets you log in using information that you already use such as your GMail, Facebook, or Twitter accounts login information. Disqus doesn’t pull your information, and their Privacy Policy goes over how their program works and why they have you log in to post.

Alternately, you can log in to post your comments by registering with just your name and email address. This isn’t a phishing program, they just have you enter your information to prevent people who are spamming sites from getting in here and posting all of their strange advertisements.