This year my Forsythia had the most blooms in the over 12 years I've
lived here. When I moved here this bush was already over 10 years old so
its old. I've been struggling taming this bush for the last 7 years and
last year I got so frustrated with it I almost chopped the entire bush
down. Then I went to google to figure out how to prune it. Paghat's
site was in the first page of links when I used "pruning forsythia" as
keywords. I learned to just let the bush be and do nothing. This spring
it has the most flowers I have ever seen. Here's a pic:

http://www.brandylion.com/images/forsythia.jpg