All the technical details aside, if you guys at YC ask yourself "Am I proud of funding this startup?" we both know what the answer is. In all fairness, PG said that YC funded another project from this company; I guess they've just used the YC name for credibility.

I find it quite ironic how PG went from building a spam filters to funding a spam company. Just for your information, this is what you've put your money and using your growth YC alumni for: http://www.kraftfuttermischwerk.de/blogg/wp-content/uploads2....