> I think someone did
> something like planet mame. It was a nice idea, but i lost the link and i don't
> know if it still exist.

It does...

http://thumper.kicks-ass.org/planetmame/

It basically aggregates all of the new entries from the dev feeds.

Also, in addition to mameworld.net, I created a dynamic feed at mameworld.info which comprises of submitted news for the entire mame scene (via our messageboard).
It's the most complete source of bleeding edge mame news available anywhere :-)

http://www.mameworld.info/ubbthreads/rss/newsfeed.php

You can even have the feed entries emailed to you:

http://tinyurl.com/h98cu