I get a lot of request from clients and prospective clients about how to improve your organic search rankings.
They want to know how to tag their pages – title, description, keywords etc. so they can achieve first page status.
Where here it is from Google on their official webmaster blog, “Google does not use the keywords meta tag in web ranking”
I think Google also discounts the description tag and uses only the title and content.
Basically, don’t worry about how to tag your page, worry about the content.
You should think about keyword placement and clustering, but top priority is fresh, readable, and useful content. Fresh so that Google crawlers and visitors will come back and find something new. Readable and useful because crap won’t be linked.