Elements (Functions) of learning in an Social Network Site

*** This is a working post. It's not complete.***

This is an attempt to list the elements/functions/factors found in an SNS and relate it to some known principal of learning. (Perhaps I should just settle with either NETS-S or the 21st Framework and evaluate each tool/SNS against it? Operationalizing a rubric is proving to be too multidimensional.)

Maybe this is the way to think about it...

Dalsgaard, C., & Sorensen, E. K. (2008). A Typology for Web 2.0. In 7th European Conference on e-Learning (p. 272). Academic Conferences Limited. Retrieved July 9, 2009, from http://books.google.com/books?hl=en&lr=&id=pC_WmUCwUtAC&oi=fnd&pg=PA272&dq=%22A+Typology+for+Web+2.0%22&ots=jHUAWdoZO5&sig=1hJFy71yIK4p9X2-bmfhwbsVxuU.

Function/Element	Category (construction, presentation, reflection, collaboration)	Notes
Profile page	several	profiles may contain many elements and may be too large of a category for useful inclusion here
Blogging	collaboration	blogs may not be inherently collaborative but if comments and RSS following are included, they foster communication
Micro-blogging	x	x
Social bookmarking	collaboration	x
Wikis	collaboration	x
ePortfolios	x	x
Media gallery	x	x
Message Boards	x	x
Podcasting	construction	x
Tagging	x	x
Real-time collaboration (Skype)	x	x
RSS Reader	x	x