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I recommend you remove the footer due to the simple fact that it is blatant keyword stuffing. Instead write some focused copy for each category of your website that emphasis each of these items: e.g., write some content about diamong rings, a category blurb or paragraph, on the page that lists all of your diamond rings; write a bit of content for cross pendants on the page that shows you cross pendants.

For the home page write some content that relates to diamond jewlerey. That way your keywords break down and get more focused the deeper you navigate into the site structure. Think about it like refining a search for a library book.

General Topic -> Broad topic -> Specific Topic -> Sub topic

I hope that helps!

What most likely happened: Your site was offline, Search bots crawled the site and found nothing responding with a 404 error, or worse a 500 level error. There is a good chance that your site could have been crawled multiple times, and thus the search bots deemed your site gone, and thus your rankings fell.

The first and foremost thing you should do (and I assume you have) is restore your website. Being offline for only a few days should not have a long term effect on your rankings. It will simply take time for the search bots to recrawl all the links that you have built and determine that their is in fact a website on the other end of them again.

You should check webmaster tools for any errors and possibly ping your sitemap against the engines. Otherwise, I think it is best to carry on as normal, the rankings should return within a few weeks.

If I may be so bold, I would suggest looking in to a different hosting company, unless it was billing related, there is no excuse for going down for more than a couple of hours in today's market.

Matt may have mentioned that more is possible, but he also mentioned that he stil recommends you keep the link count at 100 or less ( http://www.mattcutts.com/blog/how-many-links-per-page/ .) In terms of LinkJuice and PR flow, having that many links on a page is definitely not recommended in any cirumstance. Simply put, the value of Juice that is passed through your links is divided by the number of links on your page (no-follow or not).

So if you have 50 link juice points and 150 links, each link will get 0.333 points. (I am just using arbitrary number and the term points to make my point.)