If it makes you all feel any better, campaign finance is hard for us too.

At the Sunlight Foundation Reporting Group, we make a speciality of money in politics reporting, so when the dark money groups that we often cover burst into the headlines -- on reports that the Internal Revenue Service was denying the coveted tax exempt status to Tea Party groups -- we figured it was time to put what we know about the campaign finance ecosystem out there.

The process turned out to be revealing, if painful.

You can see the final product here. But we learned a lot ...