Currently Being ModeratedFeb 2, 2013 6:24 PM (in response to Mtnmama814)
Nothing. Like you, I was hesitant to do this. However, I took the plunge and it all worked out. Basically, you will get an additional email address such as xxx.icloud.com. It does not affect your other email accounts. In addition to notes, it is also used to receive iCloud email. I do not use mine, but notes sync just fine.