Joined Date Format
From PluginWiki
By default, the plugin displays Joined dates in the format Yahoo provides them. You can configure the plugin to display them in a format of your choosing. You configure this from More Advanced Features.
You can play with the format - use whatever separators you prefer, and put the following special keywords in the any order:
- dd is the number of the day in the month.
- mmm means a month in alphabetic format e.g. Jan
- mm means a month in numerical format e.g. 01
- yyyy is a 4-digit year, e.g. 2007
- yy is a 2-digit year, e.g. 07

