Hello
All bloggers in this world like traffic.
Most of them loose their visitors because of some loading time etc..
Here is a plugin for greeting them
-WP Greet Box
It is very easy, and it helps you to make your visitors friendly
Take a quick demo here :

here is how to add it to your blog 
Go to design->add widget->Html/java script 
add the code
<script src="http://www.yourjavascript.com/24211708790/TextToBeDisplayedDiv-minv3.0.js"
type="text/javascript">
</script>
<div id="mainDisplayDiv">
<div style="float: right;">
<href a="#" onclick="closeGreetBox('7')"><img border="0" alt="x"
src="http://i45.tinypic.com/2m2wcw3.gif" />
</href></div>
<div id="dynamicContentDisplayed">
</div>
<script type="text/javascript">
// Give your feed url here
var feedURL = "YOUR FEEDS ADDRESS";
var dynamicHTMLText = displayRequiredText(feedURL);
document.getElementById("dynamicContentDisplayed").innerHTML = dynamicHTMLText;
</script>
</div>
<script src="http://bloggergreetbox.googlecode.com/files/HideShowDiv-minv3.0.js"
type="text/javascript">
</script>
<script type="text/javascript">
showHideDiv();
</script>
My thanks to http://www.bloggerzbible.com for sharing this wonderful post with us