Hi,
this service doesn't seem to work all that well when it comes to birthdays. Let me explain. I entered a whole lot of birthdays when I was in one timezone. I then moved to another timezone, only 2 hours different. All of these birthdays were then shifted one days earlier! Since then I have added more birthdays for other people, and I cannot remember which birthdays are accurate and which aren't!
Rememberthemilk really seems to leave a lot to be desired when it comes to storing tasks that aren't actually tied in to a specific timezone, such as birthdays. And let's be honest - birthdays are one of the most important things to be using this service for!
If it cannot even do that correctly, then there is little hope for this service to become all that popular...