Online presence is having places where I can find you, read your stuff, and lead to buying your products. If I read one of your books, I need to be able to go online and find your website. Are you writing on other sites as a guest bloggers? That is important as it helps expand your presence.
Your presence has to be recent. I shouldn’t go to your site and see that you haven’t updated it in weeks or months. I check out a major author’s site occasionally. I usually am disappointed because her posts are sometimes months and months apart. That means I rarely check it out any more.
Post on your site at least once a week. Let me see that you are a real person and still alive.
Keep a blog on your website. Give updates and write on various topics that will help your readers connect to you. Don’t post there once a month. Do it every week. You can schedule them out so they are published while you are busy with with life throws at you.
Get active on social media. Get a Facebook page, Twitter account, and Google Plus page. Post several times a week even if it is just something cute and funny. Connect!