The problem is exemplified in this post from Kevin Jones, over at Xigi:
The worst news from the Skoll World Forum was from another investor. They were trying to co-invest with a venture philanthropy fund, but found two significant barriers; one that fund does not co-invest, nor release its due diligence reports to even other like-minded […]

Yossi Vardi is one of Israel’s most influential tech investors, a role he earned after selling global instant messaging platform ICQ to AOL. Vardi is well known on the elite global conference circuit for his wiry hair, wit and wisdom. He has become a strong proponent of using technology — and the financial dividends […]