Ask HN: can a web 2.0 app succeed without social media integration?

say I'm working on a web app which has features that make it useful as a standalone product (i.e., it doesn't obtain its value from a community element or some sort of integration of user data from external sites). is it a must to have some sort of facebook/twitter/blog/whatever integration at launch to have a shot at success? it's obviously a bit of work to write and manage code hitting various external APIs, so I'd like to avoid it if I don't think it's a useful feature. I just wonder if not having this integration is some sort of sign to user that it's an amateurish product.

I admit I'm a bit biased, because I make very little use of social networking sites, so I'm not sure how to assess the value of these features. I can see potential value in terms of free advertising, e.g. pushing activity updates from my service to a user's twitter stream. but I just don't know how to guess whether anyone would actually use these features.<p>I know the answer is "maybe", but just wanted to get some opinions, or examples/counter-examples.