at the bottom of the page where you write your entry, there's a drop box named Status, you need to pick 'Published' otherwise your entry won't show up. When you log on, there's a list of all the entries--all the ones right now have a pencil icon next to them and that means that those entries haven't been published.

[Note: Thanks, Nicole. This has been changed and now defaults to "Published" so you need to change that if you want to save a draft. I also went ahead and published all the backlogged entries. -Eric Meyer]