Top dating site rankings falling

The past ninety days shows that many of the large dating sites have worse traffic rankings according to Alexa.com.
The most improved sites are OkCupid.com and Chemistry.com which show an 8% improvement in their rank. The most deteriorated sites are True.com and down2earth.com - which has shut down ( details...).
I have no idea what is going on at true, I guess it no longer is ;-)

My site - BrainiacDating.com has improved by 31% - which is great, but it has a long way to reach the upper echelons of dating sites rankings, and it's especially hard for a niche site.
But I have hope.

The raw data for this graph can be found on my site here.