This is a useful gallery for anyone who wants to impress the visitors on their site. It's got a nice design and the look & feel are good. But when it comes to user security (for example for who can upload / moderate etc)... it falls short against the better gallery modules out there. I have experienced some failures of the module too - sometimes not starting to play automatically etc. But most of the time it works as advertised, and no doubt any bugs you report will be picked up as support is definitively good. Overall, although it works and looks shiny, I'm not too impressed by it - I think there are better gallery modules out there. And, to be honest, Silverlight isn't the major used vector graphics player...