I'm sick of reading the same feeds here at work and there at home, so I'm searching for a web application that is a rss, rdf, atom agregator.
I searched at freshmeat.net and found gregaire and mynewspaper, but i haven't try it for the moment.

Do anyone know other ones ?

If they could be : fast, easy to use, graphically simple, etc. maybe ajax-enabled it could be good (gmail it's a good example). The possibility to upload an opml file is for sure important.
And, but i don't know if it's possible, the possibility to download a file for synchronisation with a desktop rss agregator for offline viewing : it should be great (sometimes i use a laptop in travel).

thanks all.

of course, free software is mandatory... ;-)

update: of course, i want to be able to 'check' feeds and to mark some as read, some as unread, maybe some others as important, etc. (my reference is liferea)