Yahoo has given its Web site a facelift. Its not too radical, but company officials say it "represents the most significant cosmetic change at the Internet's most popular destination in two years". The most visible changes are with the addition of the music button at the top of the home page. There is also the removal of the button that directed traffic to HotJobs, the company's help wanted site. Additionally, a new search tab will report on topics are generating the most search requests.