Maccamob touched on a very important other side of the coin: supporting and helping legit new players. There are lot of new cachers with non-authenticated accounts, hence no way to communicate to them: congratulating for their first find, providing hints and guidance on caching practice when they seem to need it (e.g. taking a trackable without really knowing how they work).
Having the account authenticated and a comms channel available (whether messages or emails) would be a big help in keeping the game neat in each community. To add to this, GS could perhaps collate "top 5" points to know as part of the activation ("This is how the game works, read more here... and now you can activate...") to reduce the occurrence of trivial mistakes.