How can I get involved
The easiest way is to write a review. They're quick and fun to write -- you can take a look at the reviews that have already been published to get an idea of what we're looking for.
To post the review, please ping me (Hamlet) in our site's chat room with a copy of the review. Or, tumblr has a feature (that I just enabled) that allows people to submit posts for approval that I can then approve. So you can do that as well (but ping me about it on chat so I remember to look).
If you want to get involved in the design of the blog and/or if you want to use the blog to engage with people on tumblr, ping me and I'll add you as a user on tumblr. I would prefer not to add people as admins for the tumblr blog unless I know you well, simply because once you make someone an admin on tumblr you can't remove them.