Use case of new sticky component in PrimeFaces 4.0

I'm looking forward to using PrimeFaces new version 4.0!
There are several new components.

Sticky component is one of new components.
You can check the behavior in following showcase.
http://www.primefaces.org/showcase/ui/sticky.jsf

I'd like to use this component especially for message.
Here is my example, I used PrimeFaces 4.0 SNAPSHOT.

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:p="http://primefaces.org/ui"
      xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
    <h:head>
        <title>Facelet Title</title>
    </h:head>
    <h:body>
        <h:form id="frm">
            <!-- message area -->
            <p:messages id="msg" />
            
            <!-- main area -->
            <p:schedule />
            
            <!-- required text and submit button are far away from message -->
            <p:inputText id="txtReq" required="true"
                requiredMessage="Required text exists."/>
            <p:commandButton value="Submit" ajax="false" action="index.xhtml" />
            
            <!-- sticky for message component -->
            <p:sticky target="frm:msg" />     
        </h:form>
    </h:body>
</html>

In this example, top area has message component which isn't still shown at first.
So, we can see only schedule component.
f:id:kikutaro777:20130908213639j:plain

Required text and button are under the schedule component.
f:id:kikutaro777:20130908224106j:plain

You click the button, then the error message is shown at message area.
f:id:kikutaro777:20130908214254j:plain

Of course the required text changed red color, if you use PrimeFaces's inputtext.
If you don't use sticky component, you can't see the error message area in this case.
f:id:kikutaro777:20130908214338j:plain