I have been playing with the beta for Yahoo! Mail and it sure does look nice. The responsiveness, however, to put it nicely, sucks. It takes 10-15 seconds everytime it loads which is pretty much a show stopper right there. There is a lag on clicking things. The RSS feeds are there but it doesn’t keep track of feeds you have already read which is another major strike against.
Congratulations on porting Microsoft Outlook! I wish everyone would stop chasing Microsoft and do something much better.
[Update: I have started using Y!M Beta now for one of my accounts and it has definitely improved. It is still too long in loading up but it has a smoothness that is lacking in gmail. I only wish it was functionaly for Yahoo! business accounts…
Update 2: Global release of Y!M is solid.]