Good

The extension or a website the javascript code is injected to by metamask tried to connect to shapeshift.io which is rated "poor" by talosintelligence.com. The connection request is made approx. 60,000 times a day. The rejected connection request is not reported to the end user. The issue attracted attension to the network administration in our LAN.

Its very complicated and doesn't explain or give good directions

I really don't understand what is wrong with this extension. At first I thought it wouldn't work with Firefox Nightly or Dev etc. So I installed the stable version of Firefox with the latest update and this extension still doesn't open. It works the very first time after install and I can restore my wallet with my mneumonic phrase but, after that, it never works again. It causes more grief and is a waste of time, plenty of other serves offering very similar if not, much simpler and safer options.

This is just perfect!

Awesome

MetaMask has not performed in a manner that has been beneficial. My reason is because it has not yet delivered on the promises that it had stated prior to install, i.e. it had not delivered on the promise of things. I have been the one doing all of the work while the extension has done nothing further than make ethereum and smart contracts more difficult and complicated.
My suggestion is do not make promises that are not fulfilled and to have the extension developer take some amphetamine so that he wakes up and does his job.
I like things that actually produce results that I expect of them.

Have a nice day. :-)