A recent article on GIS Assessments and Certification just appeared in the online version of Directions Magazine: A Bold New World of GIS Assessment.
On a professional level, I see these as valid measures of knowledge attainment and technology understanding. On a personal level, I have often wondered about the validity of the certification - especially in light of the ever changing technology. Seeing the amount of people with GISP behind their name (I am not included in that number), I am curious what others may think about the growing number of technical and professional certifications.