From Mefi Wiki
Registered members of MeFi are able to customize a number of aspects of the site, including their profile pages. Up for change are the number of items on the front page and various visual properties of text and links, as well as the facility to choose a number of 'themes' (only two are currently available). One can also add personal and contact information.
A recent addition to the Customize page is the ability to set your own time zone; this will display the timestamps of Posts and Comments in your local time as opposed to PST. At the moment this does not work for posts and comments in MetaTalk, but apparently Matt Haughey is working on it.