Just keep in mind that Yahoo it is owned by Microsoft - so that tells you something - right? Gmail offers more features to manage your email. Plus, most important to me and my clients, it offers free email forwarding. To do that in Yahoo you're gonna have to pay a subscription.
Gmail also also you to receive email from multiple account in one place for free. But i don't want to rant about how I enjoy email today. I just want to share this news story about someone hacking yahoo accounts (see below). Be safe.
Read more: http://www.dailymail.co.uk/news/article-2238959/Millions-Yahoo-Mail-accounts-vulnerable-email-hijacking.html#ixzz2DRXqJjkj