Does anyone know if the Blue Yeti is a compatible usb microphone???
No, but given that it is a well known make of relatively good quality USB microphone I don't see there is likely to be a problem.
I had a quick play with the PC input feature and a USB headset mic and it worked OK.
Personally I might use one of the Behringer C range (C2, C3) and a suitable small external mixer to allow for some mic eq and compression/limiting but the Blue Yeti should be OK.