Why did yahoo! remove Chat 2.0 from the website and now you can only use it with Messenger?

bigmarcus asked: It was a lot easier to access it through the web page, messenger is a pain in the ass, and the list is harder to see. Bastards.

How would I go about making a contact form more Web 2.0ish?

Webman asked: There is a contact form on a Website in which I’d like to spurce up. It’s in HTML, and I use Yahoo! SiteBuilder for it. I would like to make the text in the form to be more bold, and the form in general to be more Web 2.0
What would I do in [...]

What do I need to know to make a website today? What programs do I need?

Mike3st asked: If I want to build a website like Digg, You Tube, Flickr, or even Yahoo Answers, what do I need to know? Something like Web 2.0.
Do I need to know HTML, CSS, and C++? Whats a good way to start learning?