User blog comment:Rappy 4187/Technical Update: January 28, 2014/@comment-460966-20140128212419/@comment-957747-20140128213230

We do not concider dropping support for browsers until they drop below a very, very low percentage. Both of these browsers are aging and do not work well with websites of today.

Keep in mind that dropping support does not mean that we no longer fix issues with these browsers. We will still fix critical bugs that render the browser unable to operate on the site.