Is it something specific to the individual, or something more general?
I've found it extremely challenging to write a light weight tech progression ladder, that is flexible enough to still be of use on a week by week basis for a specific individual and general enough to provide comparison across teams.
Any thoughts much appreciated (my initial stab can be found here http://fragile.org.uk/2010/09/how-to-appraise-a-developer-pa... it also explains why, despite this thread, I have a need for a tech ladder).
Neil