Possible Duplicate:
Why is the first tag sometimes in the <title> tag of some questions?
I was taking a look at Gaming.SE, and noticed that the first tag from the tag list is being included in the title bar. e.g.:
Initially, I thought this was a bug with Gaming.SE. So I checked out BoardGames.SE, which is still in Beta:
There is no tag here.
I then checked out a different question on BG.SE:
...which does have the tag.
What's the logic behind the feature?
