Just a bug in the system, somewhere -when you're looking for a specific plugin, and you go to the extend area and type the plugin name in the search box - well, here's what you get for Yahoo Media Player, for example:
Yahoo Media Player / Extend Search Results
So I ended up Googling it - and here are the results:
WordPress plugin yahoo media player
You'd think that you'd get exact results with a search directly on the site, in the specific area you're searching. It's pretty frustrating to think a plugin has been pulled because it's not the first thing to pop up when you search it under the plugin area.