This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I may be wrong, but it looks like the tag is automatically prefixing the context path on your behalf. Why would you not want it to do that? Without it, the URL will not work to reference any but the root application.