Clicking on a topic should search spnet, not G+

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Clicking on a topic takes you to a G+ search for that topic. This seems surprising and unnatural to me, especially since spnet is supposed to be bigger than G+ in scope. Clicking on a topic should instead search spnet for that topic.

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Okay, I figured out what is going on here. Any hashtags in G+ posts come through with G+ hyperlinks intact, so they appear (on spnet) as hyperlinks to the corresponding thing on G+. This seems natural now, but I don't think users will expect (or particularly want) this behavior. Do we want to change these hyperlinks to point to spnet searches? That would be straightforward (for G+), but may be difficult to maintain if G+ behavior changes and may be difficult to extend to posts coming from other sites.

Also, I notice that the header line for a post DOES contain links to spnet searches. So perhaps the current behavior is okay (though slightly confusing).