Following on from my post the other day about patent trolls:
Soverain Software, who pretend to sell software but actually do nothing but sue people, wanted substantial cash payments plus one per cent of all US online sales involving online shopping-cart systems.
Thanks to the patents they bought when dot-com Open Market went bankrupt, they were quite successful in this.
Not quite the public gut-hanging I would have recommended, and they had to go to an appeal to get it. But it'll do for now.