Adam Ahmed (2014-10-07T21:27:39.000Z)
domenic at domenicdenicola.com (2014-10-15T18:53:23.079Z)
I got curious after reading the Array.prototype.contains thread. I understand it means 'old things on the Web will break', but is there some cutoff? Based on number sites or number of affected users? Couldn't find a definition searching esdiscuss.org - apologies if it's been discussed.