External embedded script can be a malware vector of sorts, now we can make that code viewable with an add-on called JS View. View All JS, view all CSS. This Avast webforum site for instance runs script.js, spellcheck.js, CSS: style.css?rc2
Of cource we use it in combination with the DrWeb av link checker: http://info.drweb.com/show/2653
This extension (apart from being mis-named) is a handy idea but it screws around with source viewing of ordinary web pages. It seems to force the view source window to present relatively ancient source versions despite countless refreshes.
This has been tested with and without a fresh profile so it’s definitely a bug in this extension.
Inside Flock it had no flaws or bugs, well maybe the webdeveloper extension is something for you, have even wider possibilities, but that is an extra toolbar. The netcraft and oy oy are enough for me.
The Web Developer extension isn’t without its flaws either, I had a look at the comments for that as well and like I don’t want another toolbar. I try to keep my browser clutter free and try to keep to only one line for toolbars.