I'm notified every time WebGL is blocked on each page load. There's no way to disable these notifications and it's very irritating.

Edit: updated to 5 stars as it can be disabled after all but the setting isn't described very clearly.

it's 5-stars, because it's little time and effort to manage and also Edward Snowden said that noscript is the best protection in the whole internet...(after some Firefox update, noscript does seem to block internet in Firefox,,, but I'm sure there will be a workaround in the next edition ... buona vacanza)