SNPtheCat said:
Also it seems the base64 decodes as bus_

yeah, dosn't seem like much. if it isn't just random I'm not sure what else it could be. I'm not sure of any places that use 10-length base64 numbers as IDs for something, although, offhand the only places I'm really only aware of that use base64 at all are YouTube, which uses 11, and PasteBin, which uses 8.