While the GP Application Level Security left us with immense information to learn, here comes another series which is going to enlighten us.
First topic is already out (spSearchOnAllDB: SQL Stored Procedure to Search an Entire Database) and available for our reading, couple more are in the queue.
Start with this link: Useful SQL Scripts Series. The most important thing is to contribute some SQL Scripts, which one think would be very useful and is not available out in the common. It can be anything related to GP.
I wish more and more to come on this series.