So, the main obstacle in getting this thing to work was the ridiculous five post long RSS feed.
Having nothing especially more important to do, however, I thought I'c check to see what the very oldest thread on the MC12 board was about. And there, on page 70 of the forum, I found what I needed in a thread called "MC12 Beta Board RSS Feed". Apparently, it's quite easy to get the feed to include more entries, up to 255. Armed with my new feed adress, I went over to Pipes, clicked past their annoying "you don't use IE or FF" notice, and started to look for a good filter...
I think it works now!
As long as Jim never stops writing "Any MC12.0 license will work with it." in the posts, that is
.
LINKS REMOVED. See first post.
In Google Reader I don't get up these entries right now, but I think it will work with new ones if 404 and 410 doesn't show up (I don't know exactly how the inner working of GR works in terms of when it actually fetches feeds, etc.). Testing it out in Opera I got what I expected. (EDIT: showed up in GR too now).
Waiting anxiously for the next version now to see if it shows up
.