You do not need to have a Google account to use this: you should be able to subscribe by sending an email to email@example.com.
GoshawkDB's bug tracker is publicly accessible. However, if you're not certain it's a bug, it's always helpful to report it on the mailing list first.
For enquiries regarding training and support, commercial licensing, or for any other private correspondence, please email firstname.lastname@example.org.
GoshawkDB's on twitter as @goshawkdb.
#goshawkdb on Freenode. Do note that I tend
to keep to normal daytime in London, England.