I've noticed that there is a lot of discussion as to the use, intent, misuse, abuse, lack of direction, etc. when it comes to tags and tagging.
If I may suggest, I think that there could be a relatively simple answer. 3 kinds of tags, from 3 sources.
1: OFFICIAL
2: Semi-Official
3: user-created
Official tags would be ALL-CAPS. Only created and usable (in an OP) by Bungie-staff.
Examples: #BUNGIE #MAILSACK #DESTINY
Semi-Official would contain caps, but not be all-caps. Would be auto-created with a group creation (#Groupname) and if/when a particular 3rd-tier tag reaches a particular threshold (based on count, frequency, consistency and longevity) of usage (#Flood, #Off-Topic, #Politics, etc.)
user-created tags would be in all lower-case.
-
Just get rid of it all together.