I just realised that Yahoo Media RSS extension (mRSS) has enabled me to view my photo gallery in slide show in My Yahoo!.
This is because I’ve included Yahoo mRSS extension as part of my experimental Coppermine RSS/ATOM plugin.
You can see the screenshot of “My Yahoo!” here when it reacted on RSS feed that contain mRSS extension. The normal RSS/ATOM feed subscription is on the right, while the mRSS-enabled feed is in slideshow mode.
Other photo gallery that supports Yahoo mRSS is Flickr
You can get Yahoo Media RSS extension specifications here : http://search.yahoo.com/mrss/mrss

