Rated 4 out of 5 stars

First of all: I agree with Faktor12; this is the only copy extension that works.

From ghacks.net article (scroll to the bottom):

[Update: Statement from Mozilla
It appears you tested Version 1.0.8 of AutoCopy. This version is not sending all browsing data to Wips. That can be verified by looking at the source code or installing version 1.0.8 and looking at the network traffic.
After version 1.0.8, Wips submitted a new version of Autocopy that sent more data, but that version didn't pass review. Version 1.0.8 is the latest public version available on Mozilla add-ons and what the majority of users have installed.]

Anyway, I use prior version, 1.0.2, because the new version has plus only "blacklist" feature. But last version seems ok.
I think Wips no longer interested in this extension. Anymore. On their site, I don't see Autocopy in their project list.