Great Blogs for GORM

Hi,
  Just hit across two part Blog for GORM by Peter Ledbrook. Its kind of Must read for
every Grails dev. no matter how expert he/she is.

http://blog.springsource.com/2010/06/23/gorm-gotchas-part-1/
http://blog.springsource.com/2010/07/02/gorm-gotchas-part-2/
http://blog.springsource.com/2010/07/28/gorm-gotchas-part-3/