This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Another reason for discouraging direct link to JSP is that ActionServlet must be invoked in order for Struts to load module specific message resources. So, directly linked JSP may fails if it has custom tag the uses message resource of other modules.