have a look, it's a useful info. although I doubt this should be correctly called "Open Standard" (Open- yes, Standard- hmmm).
I'll bet on Google stuff instead, with all his Open/Closed Social/API :)
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open sn
The Open SN specification refers to the Open SN interchange format - a method of representing online profile data.
Current Specification
0.04.2 (2007/11/11)
Keywords: FOAF, MicroID, Open SN, Open Standard, OpenID, Social Networks, Social Web, Web 2.0, XFN, online profile, Google Open Social