I love the concept of creating directories to categorise mails (Thumbs up to Hotmail and Yahoo just for that). The tabbed email feature is also a very big plus for me in Yahoo. Hotmail's quick clean up and other nifty features are also really good.
Anyhow, the changes haven't come to my inbox yet, but the wife showed me her "brand new" Inbox. WoW. Kudos to them. Really really nice..... Very responsive and sleek. I had really appreciated the new changes on Outlook/Hotmail so far, and now this from Yahoo!. Yahoo! ;-)
I have always had a soft spot for Yahoo!, because they were among the first when the internet boomed, to build new software infrastructure technology around it, and they also built it to scale (well). So much of the internet infrastructure that is both standardised and taken for granted is, in one way or another, thanks to Yahoo!'s early and pioneering efforts.
So, I am actually a little bit grateful for what they've done to move the Internet forward. Seems like they are back in contention along with Hotmail in ret(g)aining their user base. I sincerely wish them well.
P.S: I've never got spam on Yahoo! mail as well.