Facebook Working on Incorporating the Hashtag
online.wsj.com
online.wsj.com
Alternatively, this could be a sign of an identity crisis at Facebook. Google+ and Twitter use them to group conversations logically, whereas Facebook groups things by people. Unless they switch back to everything being public by default, what's the point?
Now they only have to get rid of showing my friends the posts that I liked from others. I'm not sure how the settings work, but it really feels like a big privacy intrusion. That's probably why Facebook thinks it's a feature though.
I couldn't bring myself to more than skim the WSJ article, and I haven't used FB's graph search. But if you can search for "people I can reach/see" union "word" [where word can be e.g. #foo], it seems to me the userbase is already partways towards support, before FB does anything further.
I guess this leaves me wondering whether or not graph search already indexes "#foo", or whether it doesn't yet understand #foo as an targeted entity construct.
If #foo is already understood and indexed, then is this initiative then a matter of providing optimized aggregator UI's and/or API's?