Tags rankung but site isnt!!

I am ranking for my tags but my main page and site isnt ranking, its just the tags that are ranking
eg: xxxx.com is not ranking but xxxx.com/tag is ranking
And the tags are ranking badly, what could be the reason for it? should i remove my tags and my site is sanboxed too i guess.
Can anyone explain why this is happening?
Looking forward to your answers
thanks



EDIT: Misspelled the title, it should read ranking instead of rankung

anyone?

I have noticed that the big G seems to like tags recently too.

Why not build some links that point to those tag urls and raise them up in the SERPS? Make the most of it, it doen't have to be your main url that brings the money in.

well even i thought of building backlinks to tags but i am not sure if it will help

This is a clear case of not having enough content on your homepage and tag pages