This is a good article about innovations at Yahoo, it is clear Google
challenged minds and now competition and innovation became at full speed.
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Through a series of clever acquisitions and in-house creations, Yahoo Inc.
has transformed itself from a dot-com survivor into a Web 2.0 powerhouse driven
by blogs, podcasts and other forms of user-generated social media.

Read more at:
Yahoo: From Dot-Com Survivor to Web 2.0 Powerhouse