ASP 3.0 does not have extensible tags, an advantage that JSP has held over ASP for quite some time. Now with ASP .Net, extensible tags are available. Through the use of Web Forms, ASP .Net is able to do data binding, form validation and more without the developer having to write any script at all. Developers even have the ability to write their own custom Web Form controls to suit their own needs, states ZDNet News reader Corey Roth. Read more of Corey's opinion.