There's a couple of references to this in the archives.
One in the Amazon AWS thread and another in a different forum.
Neither categorizes the provider and/or tool as a non-benefit to websites.
22.214.171.124 - 126.96.36.199
OrgName: Evernote Corporation.
188.8.131.52 - - [29/Jul/2013:17:13:57 -0600] "GET /MySub/MySubSub/MyImage.jpg HTTP/1.1" 403 570 "http://example.com/MySub/MySubSug/MyPage.html" "Evernote Clip Resolver"
No other requests, however a few hours earlier there was a request from standard visitor with the full page and supporting files.