I do but it seems to make no difference to the amount of dick stiffener med's emails I get. How much spam to you get in your in box daily? I have three email accounts and it seems my google is the best at filtering out crap.
Open one account for friends and family and never post it or give it to anyone on the Internet. Open a 2nd account and use that for strangers and any site that requires an email address.
I have a yahoo mail account I use for all that signing up crap where you need to give one. I almost never get spam in my inbox, goes to the spam folder which empties itself so I never see them.