Rated 3 out of 5 stars
Thank you very much! It's nice to have this feature back!
It was really stupid idea to completely remove it from Ff v.4.0.
At least it could be kept as optional feature which enabled somewhere in "Options".
But i think it would be better to block images not from the whole domen but exactly from the folder where the target image is placed. For example it could be a special folder on the server for the ads images (unwanted) but all other folders contain usefull images.