Thanks for the reply! The thing is, while my interests are kinda related to tech (I want to research the role of the internet in media consumption, for example), it's mostly media and cultural studies that I want to research. I clearly laid out my research interests in my SoP, so why would they accept me if I'm such an off fit? Between that and the fact that RPI's deciding not to teach foreign languages anymore (and I want to focus a lot on international media, so I want to study a foreign language), I'm leaning towards not going.
I was thinking USC would be a better fit, but I doubt I'd get in. For what it's worth, I got a BA from a top school, good GRE scores, and research experience, but I'm hesitant to reject the offer and not get in anywhere else.