Re: Neo
Completely with you on that.
Yahoo Mail has a bug in the reply-to field construction that isn't fixed 3 years after I reported it (twice). I moved to a paid for IMAP provider which is several orders of magnitude more reliable (with a stack more features).
As you say though with Yahoo Groups there isn't much in the way of alternatives (even paid for). I looked about 3 years ago and couldn't find anything suitable. In one of my use cases we migrated away to a custom website design. In the other case we're stuck with Y! Groups :(
OT slightly - this is Yahoo's big problem at the moment. Mayer can say/do what she likes - unless and until she gets on top of the design/usability/bug issues in the things like Yahoo Mail that will retain users, Yahoo is stuffed. They're not going to win new users and any existing ones will slowly drift away.