Do you think Facebook is "so yesterday?"?

do you think Facebook has seen it’s day or do you think it’s still one of the main social networking sites to use? i have seen several articles lately that describe it as being “so yesterday.” there was also an article in The New York Times a few months ago that talked about some people closing down their FB accounts due to privacy concerns, and being marketed based upon their “likes.” I still use it and most of my friends do, as well but that doesn’t mean FB is not on a downturn. Wondering what the collective thinks.