Brilliant for publicly available PDFs Rated 3 out of 5 stars
PDFs in browsers are endlessly frustrating (tho' to Chrome's credit they seem to have finally incorporated a simple, quick viewer - could we have this in future versions, Firefox?). When this works, it's brilliant - finally, a top of the range computer* is able to open a document without entirely freezing up. It's fast, and it's no fuss, which is all you really want.
However, while this is great for everyday stuff, I found it a problem when looking at academic articles, which tend to be hidden on sites that need log-ins and so forth. Because it's just a redirect, any links that aren't out there publicly for anyone on the Internet can't be accessed, so this plugin kinda stops you from reaching them; you need to workaround by picking out the PDF address and copy and pasting it (and on my computer then saving it and opening it outside Firefox, but I think my plugins might just be iffy). Some other addresses ending in .pdf also don't go straight to the file, and it's necessary to click "Download Original" to go to the page it's meant to - it'd be nice if the plugin were able to detect this automatically.
There's also as someone mentioned above the odd &embedded=true&chrome=true default, which opens in a way that looks a little odd and can't be searched, but it's easy to click the button in the top right to open it in a normal window.
* Okay, it's not been top of the range for about three years, but it shouldn't have any problem opening a *document*, ferchrissakes.