Fedora 20 has hit USB sticks (so to say) and it could be the time to add the "fedora20" (sic) tag.
Reminder: the following tags currently exist.
It's kinda uneven, but indicating the Fedora version is indeed of some interest as the distribution's behaviour may change heavily:
fedora [generic, clearly]
fedoracore [the old fedora name]
fedora8
fedora9
fedora12
fedora13 [fedora-13 aliased to it]
fedora14
fedora15
fedora17
fedora-ds [not for a Fedora Release but for the Fedora Directory Server. Hah!]
For those interested in history: