To give your visitors an exclusive access to some of your blog posts, you can let them sign up in a wordpress membership plugin. This membership process will also make your subscribers feel so special because that can access some information of your blog that are not accessible to others. Membership also gives them the opportunity to exchange opinions about your blogs posts or some video diaries.   Membership system is also very helpful because it prevents from other spammer users to post links in your comment section. Add a captcha or an audio dictation voice in your registration system so that no spam bot can register in your blog. So that people who will try to add some links in their comments for your blog posts, as much as possible, moderate all comments. During your events of promos of your blog, you can select from your list of members who can win a special prize. Their registration information also contains email where you can send advertisements or promotions in your website if you are planning to have one. So that your subscribers will only use real emails, try sending an activation link to their emails before activating their accounts. So that you will have a lot of space for your new registered members, buy a domain. Give your members some free stuffs like eBooks and some free movie previews so that they will be excited about your blog. Read some tutorial about blogging so that you will find it easy to navigate when you already started posting some pictures or stories in your blog.