I know the morning paper (https://blog.acolyer.org/), but it is not so interactive, in the sense that you can't have discussions with peers and it turns into just passive reading.
List of papers we've discussed: https://github.com/pmiller10/cambridge-ai
Mailing list: http://mailman.mit.edu/mailman/listinfo/sipb-deeplearning
KTH, Stockholm's main technical university, has an open reading group too, open to everyone. Probably if you have a big enough university in your area they have something similar.
Alternatively try reddit, ie.: on r/machinelearning. That said, the value of doing this in real life, in front of a whiteboard, is worth going extra mile and find someone to team up with.
Somewhat related,a general purpose annotation platform is http://hypothes.is - a great feature is that PDF annotations are location independent because they use some kind of fingerprint to identify the document.
(So easy to be lazy w/ the infinite world of distractions available.)