Facebook says Chargers fans are the NFL's gloomiest

Dec 14, 2014; San Diego, CA, USA; San Diego Chargers fans react as the Denver Broncos take the field for pre-game warmups at Qualcomm Stadium. Mandatory Credit: Robert Hanashiro-USA TODAY Sports

The sky is always sunny in San Diego -- until football season comes around.

Facebook measured all 32 teams in terms of "fan optimism" -- and the Chargers came in dead last.

By these numbers, Bolts fans are significantly gloomier on Facebook posts than any other NFL fans are. It doesn't make much sense; they've been one of the AFC's more competitive teams for some time now.

Facebook's study might weigh the tone of stadium-related comments, too. Metrics might sink even lower in the coming months if that's the case.

(h/t Bolt Beat)