The forum should be sending updates via email if you subscribe to a thread. Is that not working for you? Is that what you want?
I see. I am afraid that as the forums grow, the amount of email that would generate would be too much? Maybe not. We will look into it. Thanks a lot for your suggestion, please let us know any other ideas you might have. This is site is still evolving.
We have functionality that does a little bit of something like what you might like. Our forum can send you daily digests of forum posts if you enable that in your profile page (if you click "Profile" in the top blue bar of the forums). Then, on the left, you will see a link to "Email Digests." It will email you everything posted since your last login to the forums (which may include repeats if you haven't visited the forums).
Hope this helps!
It helps by being push rather than pull, but digests have lots of problems:
no threading, lack of navigation and indexing because they are monolithic, require editing to save selected content, etc. They have no advantages when one uses a a modern email client.