Hacker News Reader

I guess http://www.addthis.com/ kind of does this and has a "fallback" option to integrate many services.

Mobile is definitely a problem but the mobile version of the website makes that solveable for the most popular devices.

I guess it's a matter of taste but i find the addthis button bar rather horrible to look at. Plus it does not have nearly the feature set that Nic is looking for. I agree there's a product there.

Reply on news.ycombinator.com