This took long enough by both of the major search providers. As the article below shows, Bing is finally blocking the promoted ads for companies claiming to provide tech support, but are nine time out of ten a scam. At the same time, Google has started blocking advertising for payday loans (Facebook has done this as well).
Keeping up with the scam artists is a full time job, but I sometimes think the search engine providers drag their heels a bit too long in trying to address these issues. This one is a win for us all.