It actually says "$100 million in all time sales." Which means that they had sold $100 million worth of software since the time the company was founded. Still impressive, but very different than $100 million in revenue per year.
Whoops - the article's from 2009 but I am pretty sure that they hit somewhere near 100 million in revenue last year.
Because Java shops/developers were their initial target customer, and Java is decidedly uncool among the current crop of startup kiddos. Additionally, there's not a significant social or mobile aspect to what they do.