What's the Best Way to Format a Title for a Blog Post, Article, or Tutorial?

If you are writing an article, blog post, or tutorial about a feature of ASP.NET or the .NET Framework, how do you format the title? For example, say that you are writing a blog entry about grouping data using ASP.NET's ListView control. Which of these titles is most appropriate?

1. Grouping Data Couldn't Be Easier!
2. Group Data Using the ListView Control
3. ASP.NET's ListView Control Makes Groupnig Data Easy
4. Learn How to Group Data Using the ListView Cont...Full Article.