Could be awesome Ohodnoceno 4 z 5 hvězdiček
I've used this before, however, I suggest Greasemonkey many of the user scripts are updated often and offer access to far more sites. Plus, they're easier to edit since you don't have to go into the xpi or the extracted folder depending on the extension.
My suggestion to SS would be a setup like Autopager allowing users to submit custom settings for any site allowing other users to detect those settings and use them themselves. Not only does that save time from the request, but it eliminates the need to even add new sites since the users will be doing it for you. I've added at least 500 sites to AP from forums to blogs and even sites that did not need it. Offer a way to add new pages easy then offer Regular Expression for advanced options so power users can add sites that might not be so easy to add.
If you guys did that this add-on would be truly kick ass, actually more, but I've censored myself. ;)