Weblog:   Why MySQL grew so fast (news from the 2004 MySQL Users Conference)
Subject:   I couldn't use it since 1997
Date:   2004-04-20 22:34:33
From:   tonygrant
Because of the licence I have never been able to use MySQL. I work in a niche market where licence fees are not possible, however low.

MySQL has marketing push. It isn't free (for everybody). These are the two differences with PostgreSQL. I also haven't experienced data loss with PostgreSQL since 1997. Some people I know who used MySQL can not say the same...