Please, please, please do not use skeuomorphic spinning knobs on your web pages. They're horrible to use. Right now you're thinking, "but if you implement them this way, they're fine!" No, no they are not. Physical knobs work well because we have opposable thumbs. We can roll the knob between our thumb and forefinger in a way that provides gratifying tactile feedback. There are no methods to achieve this with a mouse pointer interacting with a knob.
Until the perpetual license is less than $750/dev I just don't see enough value.
They've mentioned elsewhere that they're working on updated licensing, I hope they do.
It amazes me how GreenSock has made the swift from As3 to HTML5.I really thought they would just give up but nop, they made the transition pretty easily.
I'll be interested to see how they prevent theft of their source. It doesn't take long to get around obfuscation and such. If a person takes their HTML libs and slightly modifies the code and releases as an open source alternative to GreenSock... just curious how they'd go about combating that. Obviously they'd have to go after the site owner, but I don't think most site owners know what underlying frameworks go into their sites functionality. If they have thousands of sites using a port of their code and it was developed in India by a small team found online or something... where does the hammer fall?