<<Simply enable this lab to hide all label indicators in the subject lines, leaving the space for the subject itself again.>>
https://mail.google.com/mail/?shva=1#settings/labs

[Via http://gmailblog.blogspot.com/2009/08/new-in-labs-hide-labels-see-subject.html – http://friendfeed.com/reto/02d20b10/new-in-labs-hide-labels-see-subject-lines-on]

http://www.techcrunch.com/2009/08/05/in-the-pre-chrome-os-world-google-optimizes-gmail-for-netbooks/

[moved ~hebbet]