great article. i have a question though. you say

Length of service shows loyalty."

I am not long out of college, and have been 18 months in a SQL server Admin role with a small bit of dev. I definately dont want to spend my career in this company but i plan to have a minimium duration of 2 years. I came up with this figure by talking with recruitment agents. they say the same thing, loyalty to a company counts very well in your favour when going for a job, and here in Ireland 2 years is respectable for a young person not long out of college. But 2 years is a big step from 10 years. and i really want to stretch my legs, as after 2 years, I dont feel my current company will have much more to offer me. I will have learned most of what I can learn in this role and would like to gain more expirience while I am still young.

In your interview process, would moving from a company after 2 years due to not being challenged or wanting more expirience count against me?