If you want to use a web browser for social networking or blog, try Flock. It is specially built for Web 2.0 based on Firefox.
Flock has received many awards since it adds plenty of cool features for people who love to ‘hanging out’ in the ‘cloud’.
Ubuntu’s users can download Flock from Getdeb.net. However, Flash will not work directly, so you need to copy-paste this command line into Terminal:
sudo cp /usr/lib/firefox/plugins/flashplugin-alternative.so /usr/share/flock/plugins/.
Restart Flock and have fun!