Has anyone used Yahoo Web Hosting to build their website?

Personally, I wouldn't use it. There are too many exploits out there where people can take down your web site, and too many restrictions set on how you can do something, and what you can put on your site. I think EVERYONE should at least attempt to build a web site themselves at least ONCE. It is a lot of fun, and if you do a little research you will be amazed how much information, free stuff and help you can get on building your page. If I'm not mistaken yahoo charges like 4.95 a month, but does not give you much space and charges you a $10 set up fee, and only 500 MB of space, and 25 GB of bandwidth. I would say that is ok for maybe a family site that won't have much on it, or have that many visitors. However, if you're going to have more content, then I would go bigger. There are some great providers out there that charge only 7.95 a month and give huge amounts of space, with some tools, etc.

If you're creating a hobby website, then Yahoo is fine. However, if you're looking to create a professional website then I'd suggest using proper software. Yahoo is great until you decide in the future that you'd like to change hosting or transfer your website into Dreamweaver or something. It doesn't work. The coding that Yahoo's sitebuilder uses is different for some reason. Also, as far as I know, the html is not w3c (??) compliant.