Retrieve TAG link using just the slug.

Here is the deal. I have pages and posts that relate to each other. The page slug is related to a posts tags. I pull all news that has the particular tag for that particular pages slug. For example:

If I had a page called: Cloud Computing, its slug would be cloud-computing. That page then pulls any post that has the tag Cloud Computing.

I want to be able to have a link that says show all news for this particular tag. However the template tag called get_link_link() only accepts and ID not a slug.

I need to get the tag link from the tag slug.