I have to applaud whoever is behind the String Theory Wiki.  That site is so helpful even if  you are not interested in pure string theory but topics related such as theoretical cosmology.  The site has several review articles on a variety of topics in theoretical physics.

It would be nice to see more sites like this.  Often, especially as a grad student, you discover you need to learn more about some topic and then face a huge vat of literature without knowing where to start.  This wiki helps you quickly discover what is out there by way of review and sometimes has helpful commentary such as: “this is the standard introduction.”

I encourage everyone to check it out.  I also encourage all people outside of theoretical physics to start their own such wiki page. You will save people hours of valuable time and in a real way will help facilitate research.