we took it down from the webstore temporarily so that we wouldn't be adding new users while the extension is in a state of flux. I will email you to work out how we can merge efforts - we have a plan for what we are going to implement in the new version. It would be good to have more eyes on the project and on the social reader keeping it updated.
Edit: just realized that I can't find your contact info. can you ping me on nikcub at gmail? I am also nikcub on GitHub - are you on there?
1) This extension looks at all wpsocialreader links, so unless they change the URL paths, it should still function.
2) Is your extension still in the webstore? I tried the link in the github repo, but it's 404'ing.