My Big Mistakes — And What I Learned From Them

What I learned: Dirty data can leave you eating dirt. However, dirty data can also be your friend. Just a little later, through a misunderstanding with our data services team, we ended up mailing a large group of supporters who had requested no contact. Of course, we got some complaints, but we also got our best-ever response and made £15,000 ($23,308), which was a lot of money in those days and badly needed.