It Seems As Though...
...Yahoo! is chasing the new ideas of others, rather than building on it's strengths.
In my experience, Yahoo! has the best live text chatting environment, yet it is poorly policed, and badly organized.
They have a powerful VOIP service that noone ever heard of.
They have clueless admins that ban legit users, yet allow hackers, booters, and spambots free rein. My single banning from there made me feel obligated to warn people to NEVER trust Yahoo of anything mission critical (i managed to lose many business contacts because i was stupid enough to think my friend list was "permanent."
I still use Yahoo, but only after a few 211's.