It's ok Noté 2 sur 5 étoiles
I like this add-on in principle, but I find that it falls short in practice. I've tried to block those annoying Google ads on some pages (you know, the ones that AdBlock can't deal with), but the ads pop up each time I visit the page again. Presumably, the content of the ads changes each time, so Personal Web Cleaner doesn't recognize the new ad.
There might be a way to generalize the instructions in Personal Web Cleaner to get around this problem, but frankly it's not something I want to tinker with.
Web Personal Cleaner use HTML DOM tree to store informations. For now you can't change it by hand but you need to chose the better XPath (look on the status bar when you are selecting). For most ads, I think that an XPath with an ID is not a good idea because they can change.
If it don't work, try to select a bigger or smaller area.