Comment by mdaniel

That aggregation you mention is traditionally called the "planet", and has a long history:

http://planet.lisp.org/

http://planet.emacsen.org/

http://www.planetnetbeans.org/

http://planetopendata.herokuapp.com/opendatanews?style=hacke...

There are probably several packages which will ease the creation of such a thing, but this is the one I know of: http://www.planetplanet.org/