Saw some really good stuff on Web 2.0 and its biggest success, these can be mostly found over at guardian website which is well worth a look.

• Blogger used here
• Flickr over there
• Del.ici.ous down there
• Feedburner used to create this Rss feed
• Wikkipedia
• NetVibes etc

There are some good audio files of interviews and overall it’s a good introduction on how these different softwares started.