Hi,
Heh. Gwibber was good for a while before it grow all the couch dependencies. Now it has a high run time cost as well
http://lists.fedoraproject.org/piper...il/006003.html
Fedora 13 uses Pino by default which is a pretty fast and simple alternative. Shotwell instead of F-Spot. Looks like we are pretty light already :-)
Unity might be a complimentary interface technology wise to GNOME Shell but in terms of how development is done, it is miles apart. Red Hat developers worked in the open from the start and have made it part of GNOME 3.0 release while Unity seems to have been developed in house and presented as a finished product. There is a general history of open development winning but I will keep my eyes open.