Check out the Iowa State Spend Smart, Eat Smart blog about spice cupboard spring cleaning.  It has some great tips for checking your dry spices at least once a year and throwing away ones that are more than a year old and provides tips for making a seasoning mix with spices that you can still use in recipes:

What is your favorite spice?

http://blogs.extension.iastate.edu/foodsavings/

This blog also has a series of “Spring Cleaning” tips for your kitchen.

Great ideas!