I don’t know , just try it. Tip, Go for a sitewide link on Yahoo What I can say after I got listed at the dir.yahoo.com the yahoo bot is going like crazy on my site, so probably if you have $299 to spend is your best chance.
After I got the directory listing at yahoo the number of indexed pages at yahoo just doubled from 50 to 100 in 3 days.
I got my web design site (commercial) listed in Yahoo Directory along with 3 of my poetry sites (not commercial) before Yahoo started charging for submissions several years ago. That lasted for several years, now only one of my poetry sites is still in there (probably because I linked to my webdesign site on the other two) --they are all on the same domain.
thats not off topic at all but try this go to http://del.icio.us/ fill in the info under sign up now post your links & setup your tags heres more info http://www.seo2020.com/seo-articles/tag-and-ping.html ps this can also help get you in yahoo..