my site (www.learnhebrew-online.net), got alot of links (msn check) but still i cant see the site in any of my keywords, the last time i saw him wat on page 90 i think. the site is 4 month old, it is sandbox?
Here is a live link to your site: www.learn-hebrew-online.net. If you are the first owner of the site i don't that it would be in sandbox. I didn't find any problem with the keyword density, or any blackhat thing that would cause the low rankings. I made a searching query for the search term "learn hebrew", and i think it is very competetive market. In the top 10 the minimum PR is 4, but the avarage seems to be 5-6. So i think increasing the link popularity -containing important keyphrases in the anchor text, as you do it in your sig- will help you to gain better SERP. Good luck to You!