Google Drive is a game changer and I say that as a Dropbox fanboy. There are already apps in Chrom Web Store and I'm keeping track of Google Drive hacks & plugins: www.JetCityOrange.com/google-drive/
Google Drive is a consumer front end to Google's plumbing. For free! 24/7 five 9's and free as in beer.
Google+ means nothing to me but sticking stuff in Google's cloud? OK! I'm assuming given how tightly it's tied to Gmail that it'll use HTTPS. Please oh please tell me I can grab a public URL for anything I stick up there. HTML & XML/RSS included. PLEEZE!