@nguyenphong209: Thank you, we are always expanding all our services. @Rapa: Thank you also, I hope you enjoy it! I'm also posting to say that we are experimenting with a new framework for CheckW, which will hopefully be released soon. We're looking for a small number of testers to help us find ways to improve the new version. Please PM me if you're interested.
In regards to this: It has been fixed, all https:// protocols now work properly, as you can see here: http://checkw.com/www.peerfly.com or directly: http://checkw.com/https://twitter.com Thanks for the bug catch, we're glad we could solve it. Still looking for users to help test our new Beta model, which will hopefully be releasing next week.