Let me 'splain this....C cleaner is NOT a scam.They offer a free edition as well as a paid one. The paid one offers a few more features,as well as online or phone technical support that does not come with the free one. The free one works well.The buy one has more "perks".They can afford to offer a free one because many people who use the free one will upgrade to the one with more perks.Hence it works ...again,one needs to research and be informed before downloading anything.Some things ,of course are scams,but dont automatically assume to know the difference.