To make things worse, Google's support for their own APIs is pretty weak - I had some bad experiences with them. Calendar API wasn't the worst - okay, I didn't

To make things worse, Google's support for their own APIs is pretty weak - I had some bad experiences with them. Calendar API wasn't the worst - okay, I didn't get any response from Google guys on a bug I ran into, but they eventually fixed it (and lack of user support is pretty much a norm for them now). The situation with Spreadsheets is way worse - the API is pretty much abandoned, no changes or any reaction to bugs/complaints for a few months now. They'd roll out a new API version, remove the old documentation (instead of marking it as deprecated but accessible), but the new documentation is really lacking - only has examples in C#, and even these are incomplete. So, yeah, moving from open standards to their own API is very bad - not just because it's locking up people or something, but also because they are not supporting _their own APIs_ properly.