hi there,
some time ago I searched with this beautiful advance-search-function the following:
I excluded some genres and wanted only oneshots. Of course, I also wished to see the ranking, and what did I see? The series "slam dunk" high up. Then, today I tried again and got the same result.
You see the little bug?
It's a series, so why does it show up as a oneshot?? understands.nothing

Probably has something to do with that "10 days after" that's tagged as a oneshot in Slam Dunk's series page. So I'm guessing we need to make a separate page for it or disregard it as a special.

Hmm... I checked up on that, and I got the same result. I'm not a moderator, so I don't really know if this is a flaw in the search system or not, 'cause I don't read one-shots or doujinshi, and therefore never search for anything other than long-running series. However, if you click on the link for Slam Dunk which turns up during the search, you'll see that there is the name of a one-shot included together with that of the series- called '10 Days After' or something like that. I think that particular one-shot comes with the scans of the manga, so the manga itself can be classified under 'one-shot'. Anyway, I didn't see any other long series popping up with the one-shots, so I think you should just ignore that little matter.