A couple of months (actually, I think back in August now) I submitted a site via "free" listing into the Y Directory.
While I haven't succeeded in getting a site listed there in a few years now, I still tend to submit and forget. Today, on a lark, I took a look. The site inquestion appears in a search of the Directory (searching for the title). However, it does not include the cat that it can be found in.
Does this mean it is in the process of being added to the Directory, or what? It is not something I have seen before. (Frankly, I can't even remember what cat I originally submitted it to!)
I've never seen a site returned by the Yahoo! Directory search engine that did not include a category link. However, judging from the New Additions page, they haven't added any new sites on the 23rd, 24th or 25th, so I guess you'll have to wait a few more days to be sure. I wouldn't get my hopes up, but it sure is peculiar that your site is returned by the Directory search engine, so who knows ;-)