If you would like to see how this work with WordPress take a look at this site: VistaStyles. Each post gets data stamp that look cool and work fast without any troubles.
Here is another amazing post from Smashing Magazine:
Gallery Of Date Stamps And Calendars.
I also use this on SilentBits.. but i don’t remember why i change it. Looking at date stamps on SM gallery i need to think that option again.. look nice don’t You think ?