This is basically what I want to do. I have a forum community and a main site hosted on a different server.

Let's say I have a page on my main server on "Rutebegas" and it has tons of information on "Rutebegas". I then want to have on that page a list of all forum topics that contain the word "Rutebega".

Can I write code to do this? (that would act like content islands do)

And if so how would I?

Obviously "Rutebegas" is a generic term here...