Whatever they're doing is super benign compared to the propaganda I'm exposed to day in and day out as a US citizen with nearly every media outlet working to influence me either commercially or jingoistically. A single media platform with a different point of view is healthy, especially when it will host content the other platforms censor.

Social networking hasn't influenced my point of view, but it has allowed me to access voices that I've always wanted to hear from, there was just no way to get to them before.