Betty White, 90, Joins Twitter

I think Twitter has finally jumped the shark.

The 90-year-old Betty White has joined the social networking service, likely making her one of the oldest users on Twitter in the process.

The Hot in Cleveland star is more popular than ever, racking up 40,000 Twitter followers in only five hours.

In case you’re curious, White is following the likes of Katy Perry, Justin Bieber, Tracy Morgan and Rihanna.

Just imagine the tweets between White, Rue McClanahan, Bea Arthur and Estelle Getty if Twitter existed during the Golden Girls era …