Dunno how to show a demo.
It's quite easy.
If you would post a Link to
http://www.vbulletin.org the Script would get in affect.
It would load up the site, get redirected to the portal
https://vborg.vbsupport.ru/portal.php (You can manually check that by going to vbulletin.org) and fetch the line
HTML Code:
<title>vBulletin.org Forum - The Official vBulletin Resource!</title>
Now it takes the value of the Title-Tag which is "vBulletin.org Forum - The Official vBulletin Resource!" and puts it as automatic text for the link.
So
http://www.vbulletin.org would automatically posted as:
vBulletin.org Forum - The Official vBulletin Resource!
Hope that clears things up.