One of the most important things one can do when trying to increase PR and SERP's is building links. One of the most efficient ways of doing this is thru the clever use of
directories.
We are in the process of opening several, but have our first open for free submits effective immediately.
OkaySites.com accepts both mainstream and adult sites.
For those unclear as to what a directory is, DMOZ would be an example.
Feel free to submit your sites, and to submit category and sub-category suggestions.