[bmatheny]

Citation?

[enomar]

The googlers I've talked to have said they use gmail and google docs internally.

[mpc]

I can also confirm that

[lacker]

Google uses pretty much all of their own products internally. Notably, the corporate version of gmail, and Google Calendar.

Here's a cite: http://blogoscoped.com/archive/2008-03-12-n39.html