Sure, I think the only purpose is to cut "RP bots" (or at least identify them and their % of the poll votes) that come to page with a poll from one place - and the referer information is the only identification of that.
None extension is 'sending referral info'. Your browser does. Your extension can eventually block/change it. I don't know this particular extension you've mentioned, but if you want to see what you browser sends along with your request, install for example livehttpheaders extension. It will show you full header information that your browser sends to the destination host and the header response the server sends back. Apart from checking referer header, it's pretty useful for sniffing flv files at youtube and download them separately using wget or other tools
And some people just user FireFox with disabled/changed Referrer header and hate those damn broken links
For those who think they understand the internet soooo well I think it's funny people still talk about "breaking" links... guys there is a CHECKBOX under the 'submit reply' button called "automatically parse links in text" if you uncheck that box it will be non clickable.
DON'T NEED TO BREAK THE LINK!
LOL, you're welcome
Here's a more flexible way to do it (I should have posted this before):
http://www.stardrifter.org/refcontrol/
Opera should have something as well. Safari 'private browsing' probably handles this stuff too
Message for Internet Explorer folks - please install any decent browser (Firefox/Opera/Safari) and make the web a better place!
