I purchased clearslide two years ago and used the service from time to time. When I hadn't used it enough to justify renewing it, I tried to cancel it 30 days in advance of my renewal date. They wouldn't allow me to do it. They pointed my attention to the fine print in a user agreement that they had not previously shared with me. The agreement required me to provide 90 days notice of cancellation. Naturally, I wasn't pleased with that. But they had my credit card, so they charged it for another year and I was stuck with paying for it. Then it got really interesting. I stopped using the service when I realized that clearslide had perhaps the worst customer service I've ever encountered from a business, and I wanted nothing to do with them. But even though I stopped using their service, they then they billed me for "audio" charges that I never incurred since I never used their service again. When I didn't pay for those bogus audio charges, they suspended my subscription. That's right, because I didn't pay $23 in audio charges that I didn't owe them, they suspended a subscription for which they had forced me to pay $420, even though I didn't want to renew it. Those folks are crooks.