Yep. I have been using the beta service for quite some time, since April as a matter of fact. I even submitted an article about it to WPN back then, but apparantly I guess it was not that big of news. So I just put it in my blog under
Yahoo RSS Syndication FAQ for Publishers.
I have been picking up a few subscribers here and there a month so it is pretty cool. I have my Start Page set to My Yahoo, and it is kind of nice to see my own feed up there in lights. I actually have three to choose from, so I have one page set aside to visually see that all of them are being pinged and updated.
One thing I did report about back then was that the FAQ mentioned that there was no support for Atom. But shortly after that, I gave it a try -- and it worked. I would just like to point that out to you, you can subscribe to Atom feeds with My Yahoo too (not just RSS). Any XML format that validates can be used.
I have one question though Mike, will you eventually have a directory to view the feeds from? I know you can search for feeds based on keywords, but it would be nicer to browse through the feeds if it were set up in a normal directory that is categorized.