Here’s a plugin that I use all the time on different blogs and I would really be lost without. It’s called Maintenance Mode and it’s a plugin that lets you block access to the blog or website until it’s ready for real visitors hitting the page. If you’re signed into an admin account then you can visit the site and see the pages that a visitor would normally see; but if you don’t have an account on the site all you get to see is a holding page.
It doesn’t matter if your blog is about ipods or fart cushions, it’s always best to develop your site in private than launch it when it’s complete.