Adult blog loosing ranking day after day, what to do more?

I own an adult blog that since I changed script from LinkUpGold (very good but some high using server resources) to Wordpress is loosing ranking day after day, from Alexa Rank about 70/80K now it shows 97k, from 20k daily entries from google to 5/6k

I submit new content to linkdumps, bookmarking sites, to my LW (24 rotating blogs), open some link profile sometimes, always changing texts to avoid duplicate content penalties

I also get some daily bookmarking submissions from users using AddThis, use search meter plugin to serve the content users search for, show most viewed vides widget, added feedburner feedcount

despite all these work, I cannot stop my blog loosing ranking every day

can someone give me some good white head advice?

i dont see how switching from your old system to wordpress would cause your ranking to decrease. The only possible reason is if you are loosing your ranking in the serps maybe due to a change in onsite SEO..like urls changing since you switched to wordpress. Have you checked webmaster tools to see if you have many 404 errors or if your index count went down?

If you lost ranking with the SERPS then that would explain your alexa decrease since fewer ppl are hitting your site daily and alexa rankings come from toolbars on browsers. I have seen this happen with a few of my sites after I forgot to 301 redirect pages I either deleted or changed the permalink on.

thanks for your answer, in my case there are few 404, maybe i need to think about some new way to serve content, a lot of users search for sites where they can see a gif preview of videos, last week I saw tube sites with an little video preview of the video on homepage, maybe this is the way to follow to make users stick and come back to my site...