It seems like the next big thing is going to be calendars.
Google released their version of it today, called Google Calendar (Didn’t see that one coming :p). After playing arround with it, I must say… it’s not up to Google’s standard. Ok it looks ok, but not everything seems to work in my browser (I’m using Firefox 1.5), like adding personal Calendars.
Good thing it’s still in beta.
Update: Looks like today it’s working. Must have been a glitch.