I have mentioned it before in the "What are you Organizing thread?" Periodically, I will go through my saved patterns and re-evaluate. "Will I ever really make this quilt?" or so often in my case, "Do I just like the colors?" I often I find duplicates, delete, I find patterns that are too complicated or that have a "Kabilliion" pieces in just one block, delete. (Not my style or pleasure place.) In the end this process is much like cleaning our a file cabinet drawer or a shelf in your quilting library. Delete and keep what you really want.
Know your self and your tastes, be realistic and dump what can go. The same goes for websites that you join to get one free pattern and they send you "stuff" for years. Unsubscribe!
Happy deleting, my quilty friends.