Unfortunately, this add-on does not work. Not even the tweets shown in the corresponding article had any comments added when I looked them up. I hope there will soon be an update that will fix any problems.
It is not working at all for me either and I wanted this SO bad. I suspect that using https or do not track may have something to do with it working for some and not others. I have Win10, FF51 - not e10s enabled. I tried disabling my https add-on but apparently I have something else that is automatically setting https so I can't test that theory until I find it. Perhaps ad-blocking could be interfering too. I think those of us it is not working for have some kind of setting or security add-on that is blocking it from working. Three stars until I figure this out.
So I have had this installed for a month and still it doesn't work. Whats more the developer hasn't responded to all the people who say it its not working. I have win 7 64bit FF. If you cant figure out how to fix the add on then admit failure and delete it or respond to the issues and tell users how it works.
It is great to be able to get more context when seeing the next president's tweets. 140 characters is not enough to understand what is really being said.
That being said, there are some problems with the current implementation:
1. The plugin only appears to work on the twitter.com site. It does not work for embedded tweets or inside tweetdeck (what I usually use). 2. As far as I can tell, the context only includes links to WaPo stories. I would hope and expect that other sources could be included as well. 3. The documentation and description of this plugin needs to explain how it works and where it doesn't work.
Neither of these problems take away from the necessity of having a tool like this and neither of these problems seem to be difficult to address in future versions of the software.