[kmfrk]

You have to include it with the browser, before it's going to work. Everyone has created their own service or JS bookmarklet, and social isn't going to change that. There's also no point in annotating things, if the service shuts down. I guess a Dropbox-based service could get around this, though, but then it gets tricky on mobile - which is too big a demographic to ignore.

Maybe we should start working on a standard that browsers could implement instead. I wouldn't be surprised if Opera started looking into this, but as much as I prefer them over all the other vendours, the web version of Opera Link (bookmark sync) has not worked for me in around two years or more. Hence the need for a standardized, browser-agnostic approach.