Our site is an easy way to keep track of various marijuana strains and the different effects that they have on you. I was a newly-minted medical marijuana patient in California when this idea struck me. Visiting different dispensaries the volume of choices can sometime be overwhelming and they are as nuanced as a fine wine. I started keeping track of how I felt while smoking the various strains in a spreadsheet. Got together with a couple of friends and built the site in a few weeks (slow on the HN scale, I know).
The basic idea is to aggregate all the ratings and allow you to search and filter by the effect or medical relief that you are looking for. A secondary goal with the site was to make it very work friendly. There is no pot porn or pictures of giant leaves. Definitely not geared towards the stereotypical pot heads, focusing on all the other pot heads in the world that you don't know about.
http://www.leaf.ly
"3.5 The Applicant certifies that, to the best of his/her knowledge the domain name is not being registered for any activities/purpose not permitted under Libyan law."
http://www.nic.ly/regulations.php