We've seen a lot of corporate-startup partnerships through the years - the good, the bad, and the ugly.

Here are some of the best practices we have picked up along the way.

Last week, TechCrunch's Danny Crichton wrote that "Corporate Accelerators are an Oxymoron." He makes the valid point that corporate accelerators are beholden to corporate objectives and can stifle innovations through misaligned incentives.