Sorry, but what culture do you believe Bartz destroyed? I was at Yahoo before Bartz, and left only about a month before she was fired. I don't believe that Bartz destroyed anything. Yahoo has never had a great culture. They've always had an identity crisis. You can go read PG's older essays and see that.
Bartz was fired because she couldn't work a miracle. Yahoo needs some truly amazing changes in order to avoid Sun's fate, and I'm not sure anyone out there can/will deliver what's needed quickly enough. You mentioned Apple as a turnaround example. Exactly where do you think Yahoo is going to get a Steve Jobs?
I believe Yahoo! definitely had 'culture' in the early days, they were pretty much synonymous with end-user content on the net and the Y! employees and their users were the ones that showed us cool offices, a different kind of company and neat things to do with the web. I think they went downhill since the .com crash and never managed to recover. The final remnants of that were buried in the last two years, now Yahoo! reminds me of an oiltanker with the captain and the rest of the crew below decks. Time will tell if they can turn it around or not but with giants this size even dying will take a long long time.
To answer your question, though, I started three years ago and some months ago. I came in just a bit before the Microsoft deal fell through.
I keed, I keed about the bathing. :-)
People that don't work at Yahoo! telling people that work there to quit remind me of the pope telling other people to abstain from sex. If you're not playing the game don't tell others how to play it or to stop playing it.
Yahoo! has had a rough time but it still has plenty of life in it, let's wait to see what they intend to do once they've found their new bearings.
Carol Bartz was a disaster, she did the worst thing any CEO could ever do, which is to wreck the culture that pervaded Yahoo!. Now it is up to new people to try to restore that culture or at least a semblance of it and then possibly the oil tanker can be turned around. It isn't over until the fat lady sings.
Yahoo! is huge, has a pile of interesting tech, lacks polish and needs focus. If Apple could be turned around then so can Yahoo.