What If Gmail Had Been Designed by Microsoft?
Philipp Lenssen from the Google Blogoscoped blog does some iterations on the Google Mail userinterface while he investigates the question "What If Gmail Had Been Designed by Microsoft?". He ends up with a userinterface which is very much like the hotmail I knew before I replaced it with my current gmail account.
Have fun reading.
p.s. Did you notice that the gmail space has increased to around 5GB lately? Google continues to amaze (frighten?) me at how much data they can store.