So you have a website for your author brand... Your book covers are visible. You've got the social media icons proudly displayed. You even have ordering information, plus links to Amazon.com, Barnes & Noble, etc. Good job! But what about your e-mail address? Is it there, too? It should be!
I'm amazed at the amount of author sites that don't list an e-mail address. I understand why some big brand name authors don't list an e-mail (they'd be deluged with mail), but come on--if you're an independent author or mid-list author, you need to have your e-mail address somewhere on the website, preferably within a CONTACT section. Believe it or not, plenty of readers enjoy e-mailing authors instead of/in addition to interacting via blog and Facebook comments and tweets.
Remember, your "author brand" needs to be accessible. That's good customer service. Your author brand, like any brand, must practice good customer service or ... out of business you shall go!
List. Your. E-mail. Address. Period.