It's an excellent policy.

Always maintain a seperate home/personal account. Don't use this for work purposes as you may find you're being asked to provide personal records to some snoop -- not that this is proof, read Jamie Zawinski's [link|http://www.jwz.org/gruntle/rbarip.html|real bad attitude] sometime.

I keep seperate email, generally slave bookmarks from my personal system(s), and routinely sync up other preferences that I've created across various systems, though my personal systems tend to drive. The legal/pragmatic environment has shifted strongly to the view that your work system is your employer's. My interpretation of same is that my employer then gets little if any benefit of my own personal exploration and expansion of systems. It's that nagging little "chilling effect" people keep talking about.

Natch, at the moment, the problem's rather moot ;-)