Then I start using google adsense i was surprised how competitive ad filtering is uncomfortable to use. it is strange because google well known by usability of its services. so I made up a tool googlock.com that can help to manage ad filtering The purpose of filtering is not important. It could be MFA and LCPC filtering or just filtering of undesirable sites. there are a lot of adsense preview tools over the internet, witch allows to preview ads but this tool also allows to save history, automatically trim urls to fit into ad filter and preview advertised sites right in the iframe on googlock. to start working with googlock just insert your site url in the input field and select country to preview. then on the left side of page you will see ad boxes you can click on them to preview sites or click on check boxes to block them. when you finish blocking, just click on Show List to get list of blocked sites ready to competitive ads filter. If you are registered user googlock will save the data when you block urls, and you will be able later to sort urls by date of blocking. All the comments and propositions are welcome. I hope you will find this tool useful googlock.com
how it works you can read here: googlock.com/faq also you can ask questions in this thread. adslblacklist is slightly other project because it is not an adsense preview tool