I must be doing something very wrong

[adrianTNT]

Can I get some direct advice for a domain I am trying to optimize?

The domain is mmfiles.com , it contains software submitted by users, 1500 different listings/pages with title/description, around 20 000 Google results for the domain, site is live since Dec 2008.

Problem

I am getting 20-40 hits from Google per day, it is pathetic. Best days were around June 2010, ~400 hits/day (if it matters).

I am not sure what my problem is but with so much content and so little hits I must be doing something very wrong.

Some possible problems and things I did:

• Google says I have 8 back links, that is not good but I know it's not all about links.
• SeoMoz says I have "too many on page links", can this be so important ?
• How should I redirect users landing on an url that moved? e.g software title can change, old location /12/photo-gallery/ is now /12/xml-photo-gallery/ , if user lands on old URL should I 301 redirect to new one? Because I can tell it's intention by the listing number. I used to 301 redirect, now I just display same content on any url string like /12/whatever/
• I put rel="nofollow" on some internal pages like contact page, login, register, etc hoping to prevent diluting the page rank.

If someone can have a look at the site and mention the most obvious seo problems it would be great.

[TakeshiYoung]

It looks like most of the content on your site is duplicate content. That's your biggest problem. Google doesn't like duplicate content, so if you want to rank, you're going to have to create content that is unique to your site.

Reducing the number of links you have on the page can help, and will probably be a better user experience. No use overwhelming the user or confusing the search spiders with tons of links.

Finally, do not nofollow your internal pages. This will not preserve page rank, it only results in link juice evaporation.