Firebug or Chrome Developer Tools is probably your best bet.
Append the URL of the web hosted PDF file or Office document to "url" querystring of Google Docs Viewer service -
In the example above the URL https://aka.ms/SQLtoAzure/MobPDF points to a PDF file. Any URL with a .PDF extension would work too. After that file is opened within the browser, ...
if you're a firefox user, there's an add-on called youtube ratings preview. it shows the percentage of ratings on both search results and recommended videos on video page, but not on 'load more suggestions' results.
not the ideal i guess, but it helps.
There is no way to block a video within YouTube. You can block a user though by navigating to the users profile and clicking block user.
If you are looking specifically for a browser extension then please flag this question for migration to SuperUser. (Browser extensions are off-topic here as per the FAQ)
Here is a link to a discussion on Google Product Forums that should point you in the right direction.
Some of their suggestions include Gladinet, Memeo Connect, and a work around using a Print dialog to save directly to the drive. Good luck.
Well, you can edit a bookmark in Firefox, although delete/create might be easier.
Copy your current location
From the menu, choose Bookmarks > Show All Bookmarks
Find the bookmark you want to edit (easiest to use the search bar) and select it
Paste your current location in the location field
Close the window
Perhaps this might help: http://userscripts-mirror.org/scripts/show/156278.html
This script removes youtube users you choose from appearing in:
Recommended Channels tab
My subscriptions/What to watch (if someone you are subscribed to likes/favorites a video from them)