URL specific websites with i-framed application

[FidelityOne]

I have 300 URL specific websites that rank well in Yahoo and Bing.  Unfortunately I don't have access to the websites due to a previous marketing agreement (before my time).

I do have access to the application that is i-framed into the websites.  I was thinking about adding a paragraph below the application with a link to the primary website.

How does google look at these links. If I add the link, there will be an additional 300 links showing up at the same time. Not what they want to see from my personal knowledge base. At the same time, its not black hat SEO, I am just trying to link to the other websites which I own which are related.

What are people thoughts.

[JamesNorquay]

I do not believe that iframes get crawled, this was stated from Matt Cutts numerous times.

Also on google help docs they state that they are not crawled:

http://www.google.com/support/webmasters/bin/answer.py?answer=72746

[RobertFisher]

With the links from the IFrame application to your primary site, I do not see it as a problem (if I am understanding you correctly).

Because the content in the I Frame is originating from a single source, there would only be one link to the site. It would not be 300 separate links.
Content in an IFrame can be indexed by Google, but it is indexed via the links to the source and then to the content. Such that any juice would go to the originating source and not to the site where the IFrame resides. So, that link in the paragraph you install should be seen as a single link to the site and not 300.

Hope this helps.