Honestly, I haven't tried GoogleDocs beyond a very brief test when they first announced.
I'm curious... not go all Microsofty on you, but have you tried the file on Windows Live SkyDrive? So far the only formula I've run into that doesn't work is =CELL. (Based on tests, INDIRECT does work.)
It may be worth checking out, unless there are features of GoogleDocs that you need which can't be replicated in SkyDrive/WebApp.
And thanks for the kind words too. It's great to see you here!