This jira has introduced several issues.
Now there are two project examples with the same name in the Project Examples wizard.

There are only one archetype in the JBoss Central editor.

The error log is showing the following error:
!ENTRY org.jboss.tools.central 4 0 2011-10-18 19:19:32.625
!MESSAGE Invalid Project example:org.jboss.tools.central.jbossas.quickstart.jbossJavaee6Webapp
The JBoss AS 7 Quickstarts::jboss-javaee6-webapp project example has been moved to the Java EE 6 Quickstarts category what is causing the "Creating your own application" action in the kitchensink cheatsheet to not work.
Since the JBoss AS 7 Quickstarts category contains project examples with cheatsheets, it needs to be listed first. The "Helloworld quickstart" project example will probably be the first project example a new user will want to start.
The Java EE 6 Quickstarts category just creates projects and doesn't contain cheatsheets that would explain, deploy, run ... projects. Java EE 6 Maven Archetypes is a better name for this category.
Added a Java EE 6 category and 2 maven archetypes to the JBoss Central dashboard :