Visual Sciences (formerly Websidestory) launched a Certified Professional Program at its User Conference held at the US Grant Hotel in San Diego, Calif. The program enables clients and partners to receive in-depth training and certification on Visual Sciences' real-time analytics applications and will provide several levels of role-based and product-specific training curriculum which culminate in certification as a Certified Analyst.
Professional certificates are now available from Clicktracks, Omniture and Visual Sciences. I am not sure if they really help or just are a motivator for customers to attend the conference.
Studying Web analysis takes time and unless I get my hands dirty, I pretty much don't get much out of training/certification "events". Anyways...a certificate looks always good.