I present to you here Google Knol, and Diigo
Google’s KNOL for Creating Knowlets
http://knol.google.com

Diigo annotation tool for annotating existing websites and blogs as a meta layer.
Diigo.com

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Mark. Enterprise Service Bus:enterprise service bus [Internet]. Versie 8. Knol. 2008 aug. 28. Beschikbaar vanaf: http://knol.google.com/k/mark/enterprise-service-bus/2ztgdpt515s4g/7.
http://www.mulesoft.org/display/COMMUNITY/Meet+Mule

Object Reuse and Exchange (ORE) is a framework for creating collections of related scientific work. ORE an initiative of the Open Archives Initiative (OAI). Web resources can be related to one another in a semantic web machine readable way. The collections or aggregations of web resources can be stored in distributed locations such as web pages and online archives. This in contrast to web services that are locking-in the data, so other users are obliged to use the same service.
When many many aggregations are made one is able to discover …