I have honestly never used it. We have specific editing styles & techniques that can only be performed with certain programs. We like to keep our overall look very fluid so our style is evident right from the start and clients can know what to expect when they book ae. We wouldn't use basic editors unless it was for some quick personal photos. I honestly had never even visited the Picnik site until I received this question. My overall first impression is that it seems like it might be a quick & easy place to do some editing for those who do photography for a hobby and could work well for that, but as far as on a professional level, I don't feel it would provide clients with the best possible level of quality they deserve when paying for professional services. But--that is just my opinion, and I don't have any experience actually using Picnik.