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.
204.154.94.0 - 204.154.95.255
CIDR: 204.154.94.0/23
OrgName: Evernote Corporation.
204.154.94.126 - - [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.
