i have only 5 but its all linked together via msn link so its ez to manage maybe that cud help some of u guys out
3 accounts - 1 on Polish portal, 1 on American portal and 1 connected with my website. I use all of them.
I have 4 email accounts. Two of them (Gmail and Yahoomail) are for personal use. The other two are used in my SEO tasks.