Hi,

In terms of creating albums, I would recommend consider using User contribution module, that allows website visitors to edit and delete content, even if they are not CMS Desk editors.
More information about this module can be found at
http://devnet.kentico.com/docs/devguide/index.html?user_contributions_overview.htm

Regarding to tagging users functionality, regretabbly this is not implemented in Kentico CMS.


Best regards
Michal Legen