You've heard the slanderous accusations no doubt.
The story they don't allow you to hear is rather complex, but I'll give it a go.
jl777 is an anonymous web financier who lives on the internet and sells people millions of dollars in ponzi investment products. He is 100% anonymous and goes to great lengths to keep it that way.

I arrived at NXT with virtually no knowledge of the project. I was curious about some of their claims. I got to know some of the people there and some suggested that I make a proposal to improve the currency. I proposed a feature called Virtual Corporations, which allow for complex internal asset and money management in a p2p environment. We went through a community process and the community agreed to fund roughly 33,000 NXT(about $1000) for what I estimated to be about 1-2 months of full time work. The project gained a lot of interest.