Digital BW, The Print

Do you all layer your prints with buffered tissue? I know this is de riguer with traditional 
darkroom photographs but I wonder what you all use to protect your matte digital prints? 
What's truly necessary? I'm starting to think about better storage for my work and have 
perused Light Impressions (and University Products...thanks, Stephen), but the cost for 
some of these products will really add up and I want to be sure I am looking at the right 
things.

Please excuse me if this topic is annoyingly redundant. I looked in the archives and 
coulnd't seem to plug in the magic key words to find what I was looking for.


Thank you!
Sarah