Adding a URL to forum posts with the new Google rules?

I've been working with somebody who has been hit hard by the new Google rules (they went from page 1 of Google and dropped 858 places overnight).

In my research, I've found that pages that have a small amount of info followed by a link can cause big problems.

I was wondering how that works with forums such as this one, where we request support in a few lines and then give our URL to see the problem.