Great blog post Matt. I've been using jMockups on and off and I really like it. I'm a designer and it really speeds up the process of iterating through ideas.
That being said, Matt, it'd be awesome(for you, as marketing material perhaps) if you could showcase how jMockups helped increase sales/conversion rate of a certain website that uses your product.
Tools like this are meant to streamline and speed up your design process rather than specifically increase your sales or conversion rate. One wouldn't ask that about an IDE, for instance, or a photo editing program.
I could implement that if its something more folks are interested in. Maybe give users the options to specify the 960gs options or Blueprint positioning, etc.
The jMockups demo crashes my Chrome tab. It's been like this every time I try it. Chrome beta 10.0.648.151 and Win7. Really odd, crashes normally never happen.
That being said, Matt, it'd be awesome(for you, as marketing material perhaps) if you could showcase how jMockups helped increase sales/conversion rate of a certain website that uses your product.
Keep hustling man!