I tried to modify https://chrome.google.com/webstore/detail/google-reader-notifier-wi/lcepfljgpjnmoikmbedafopbakpjkijk/reviews to use bazqux but I failed as it uses an old chrome extension api (the backgrounding needs to be fixed). It would also be hard to release it as its not Open Source (in the libre sense).

Opera extension was written by one of my customers (not by me) after I developed API. Chrome & FF extensions are planned.

I see you made an Opera extension but where is the one for Chrome? To me this is critical and hopefully unlike with Feedly it will have an adjustable checking time as Feedly seems to only update every 10 minutes.