The idea with the gmail-account to "share personal data" is a bit "indirect" I'd say
(and inconvenient, especially for those who are currently logged in with a different gmail-account).

Can't you just use one of the "Online-Space"-offerings - and then simply declare one of your "synced online-files" as "publically available" (and post that link instead)?

E.g. Ubuntu One (http://one.ubuntu.com), which I use here allows that - and it offers 5GB-online-space for free.

Here's the download-page for the Windows-based syncing-client: https://one.ubuntu.com/downloads/windows/

Olaf