1. Yahoo buys del.icio.us. Yahoo! continues its buying spree of cool Web app companies, after also buying Flickr and konfabulator this year. Bubblegeneration had a nice summary: "Yahoo, I think, is rolling up social plays so it can basically do what I've outlined as the dominant Media 2.0 strategy: vertically integrate across the 2.0 value chain, with a focus on the edges."

2. Amazon announced the Alexa Web Search Platform, which provides public access to Alexa data along with computing and storage resources. I wrote about it here. Most bloggers were bullish about the news, but it remains to be seen what third party services are developed on top of Alexa's platform.

3. FeedBurner makes RSS interactive, with FeedFlare. A big step towards delivering decent functionality and interactivity to RSS feeds. It's significant because RSS is a far more important content 'container' these days than HTML.

4. Structured blogging arrives, with two new plugins for Wordpress and Movable Type. Phil Pearson rounded up all the action. Josh Porter also had an interesting take, which prompted Bob Wyman of PubSub to comment: "When Structured Blogging becomes the norm then we’ll have 'the semantic web.'".

5. Tagworld takes on MySpace - TechCrunch and Om Malik have the details. In a nutshell, Tagworld is focusing on music in an attempt to muscle in on MySpace's market share.

6. Global Voices Online Summit. Dina Mehta provided excellent coverage on this truly global blogging event. Also see a follow-up post from Dina, in which she talks about how an Israeli and Palestinian blogger sorted out some issues while at the summit. Inspiring stuff.

7. Google releases a Music Search, giving users links to song lyrics, music artists "popular in the U.S." and CD titles on the main search results page. Here is an example of a Google music search on my favorite band, The Velvet Underground.

8. Ryan Stewart, who works for the Learning Lab group at The Wharton School, wrote about how the Web is changing education: "To me, Web 2.0 isn't just about tagging and blogging, it's about really using the web to its fullest potential and changing whatever industry you're in. For us, it's changing the way students experience learning in the classroom."

9. TechCrunch thinks Writely is kicking a**. According to Mike, Writely continues to lead the pack in online ajax word products.

10. Yahoo joined forces with the Seven Network, one of Australia's leading television and media companies. Couple of interesting comments were left on my blog about that deal. In yet more Yahoo news, they announced a partnership this week with Six Apart to provide Movable Type hosting.

That's a wrap for another week!