I unfortunately learned about their reputation too late... they pressured my company into signing a Series A term sheet only to pull it 3 months later (at the end of the no-shop) after THEY messed up a partnership negotiation. Needless to say we were out of cash at that point, but luckily we had some great seed investors who re-upped and a month later we signed a term sheet with another VC. What a nightmare though.