S.J.Scott says, in his book "Master Evernote" (page 50 of 141) to avoid multiple-word tags. They use the example of "2013 ebook" and "2014 ebook" vs "2013" "2014" and "ebook".
I'm not sure I buy it. I'm pretty sure that "Plenty River" is a better tag than using "Plenty" and "River" as separate tags. I want to get my tags done right from early on, so I thought that I would ask. PLEASE don't just say that it depends on the user, or etc. PLEASE be opinionated here.
(I have also read "Evernote Wow" by Garth Scaysbrook and recon it is a better book, BTW)