IEEE membership. Is it worth it?
CyberFonic: I've been an IEEE and ACM member for over 20 years.  Although I've cut back on the number of publications I subscribe to, I still find reading them very informative. I can read them on the train/bus/beach.  They provide a snapshot of the state-of-the-art.  
Consider the subscriptions to be part of your on-going professional development. In Australia, the subscriptions are tax deductible so that helps too.
As for the myIEEE, I find Google Scholar more useful.  But that's when I'm trying to follow a specific topic.
The permanent e-mail address on acm.org has been excellent for staying in contact as I change jobs, ISPs, etc.