GSS shutdown gives us a year also. I just migrated to GSS a year ago. And they decommissioned they big appliance Google Enterprise Serarch I think it was called.

We were users of the Google Mini Search appliance, went to a 3rd party in-house installed search solution that we did not like and then a year ago went to GSS. We are looking again for something suitable. The best part of the Google Site Search was search fidelity.