There are several proposed tags changes lingering about here on meta. I thought I'd capture them all here, each one as a separate answer, and let people vote on them. 

That way our admins can make changes in sets and not one-by-one. :)

 - [Rename `sql-server-2011` to `sql-server-2012`. Make `denali` a synonym of `sql-server-2012`.][1]
 - [Merge `locking` into `locks`][2]
 - [Delete `xmltype`][3]
 - [Delete `columns`][4]
 - [Delete `schema`][5]
 - [Delete `add-column`][6] - **completed**
 - [Delete `data-migration`][7] - **completed**
 - [Delete `database`][8] - **completed**
 - [Merge `restore` and `recover`][9] - **declined**
 - [Delete `query-help`][10] - **completed**
 - [Rename `azure` to `sql-azure`][11] - **completed**
 - [Delete `mysql-replication`][12] - **completed**
 - [Delete `pg-restore`][13] - **completed**


  [1]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/456#456
  [2]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/453#453
  [3]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/435#435
  [4]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/410#410
  [5]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/409#409
  [6]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/406#406
  [7]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/388#388
  [8]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/392#392
  [9]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/386#386
  [10]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/385#385
  [11]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/384#384
  [12]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/383#383
  [13]: http://meta.dba.stackexchange.com/questions/382/tag-cleanup-vote-for-the-following-proposed-tag-changes/387#387