Taking semantic web technologies to the most popular social network seemingly hasn’t made an impact in customer satisfaction, yet. The social network in question is, of course, Facebook, which in April announced the Open Graph Protocol that lets developers use RDFa to make their web pages about things into objects in the social graph, and followed that up last month with the news it was adding the Open Graph protocol markup to every public page on Facebook, so that it’s easy to identify companies, musicians, and so on.

In the just-released American Customer Satisfaction Index’s debut rating of social media websites as part of its regular report on E-business: Internet Portals & Search Engines, and News & Information sites, Facebook achieved a score of 63 on a 100 scale.

That’s behind two of the three others ACSI included as their own individual entities in the category: Wikipedia received a score of 77 and YouTube scored a 73. (Are Zuckerberg’s ears burning again? Probably not — see below for why.) Ranking just below Facebook was MySpace, with a score of 63.

“Controversies over privacy issues, frequent changes to user interfaces, and increasing commercialization have positioned the big social networking sites at satisfaction levels well below other websites and similar to poor-performing industries like airlines and subscription TV service (both 66),” the report notes. Ouch. Open Graph itself may wind up being behind as much of the dis-satisfaction as the satisfaction users reap from Facebook, given the concerns that rose up around the protocol’s impact on things like user privacy.

The social media category at large wound up with an ACSI score of 70, well below portals & search engines, and news & information sites, the ACSI report states.

Don’t Love It, Don’t Leave It

Even though users may not love Facebook, they don’t seem to be leaving it (hence Zuckerberg’s ears are feeling fine). This week the social media giant reportedly passed the 500 million-user mark. That’s a lot of potential Like trails – and a lot more given plans that the Like button is soon going mobile too.

Meantime, MySpace continues to struggle to keep from slipping. Not that long ago the web was abuzz with MySpace working on a “data availability” project as a foot in the door to the semantic web. That, to our knowledge, has taken a backseat, but stepping in the passenger door is Adaptive Blue. This week it rolled out its GetGlue MySpace app, described a a light integration that helps MySpace users display their entertainment tastes right on their MySpace profile.

In case you’re wondering whether any other social network, whose name starts with an “F”, is next, CEO Alex Iskold says, “We have no conversations with Facebook about working together.”

• Don’t forget to propose your startup for our Semantic Web Impact Awards. The deadline is Sept. 15.

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