U-T San Diego reports Comic-Con International organizers and San Diego Mayor Jerry Sanders have announced a one-year extension to their contract, ensuring the convention will remain in the city through 2016.

Why not forever? The limited capacity of the San Diego Convention Center has been a issue as Comic-Con gets bigger every year. By moving some events out of the center and into nearby plazas and other facilities, organizers were able to loosen things up a bit and offer an additional 5,000 badges this year.

Sanders has been advocating for a $520 million expansion of the building, but a tax on hotel rooms that would fund it is tied up in court, and the project also must be approved by the California Coastal Commission. There are other obstacles as well, but the bald fact is, as CCI spokesman David Glanzer said, "If by next year and the following year, we have such an influx of people that the added space we use doesn't work and there's no expansion, then it could be an issue."

But with Comic-Con bringing $68 million into the city every July, Sanders and his administration have pretty good incentive to make it happen — and nearby Los Angeles and Anaheim have equally good incentives to try to lure Comic-Con away.