[PHP] What's this image tag for?

[Skip Evans]

Hey all,

I'm building a site for a client that is using 
this system called Linkshare to link to web sites 
for stores and it's one of those deals where they 
provide the link code so my client gets credit for 
sending the person to the store's site. Common 
enough, but there is one thing about their code 
I'm a bit confused about.

Here is one of their links you put in your code to 
link to a store:

<a 
href="http://click.linksynergy.com/fs-bin/click?id=5sJlsTOpnzE&offerid=115126.10000505&type=4&subid=0";><IMG 
alt="Sharper Image" border="0" 
src="http://www.sharperimagespecials.com/banners/Promos/11_Nov06/fshproplus_1106_125x125.gif";></a><IMG 
border="0" width="1" height="1" 
src="http://ad.linksynergy.com/fs-bin/show?id=5sJlsTOpnzE&bids=115126.10000505&type=4&subid=0";>

You'll notice they provide an image for you to 
display embedded in the <a href="..."> </a> tags, 
simple enough, but I can't figure out what that 
second IMG tag is for with the little 1 x 1 image. 
Since it's outside the actual link, I don't really 
see what it accomplishes.

Anyone with experience with these things, or just 
any idea why it's there would sure help clear the 
fog from my brain on this one.

Much thanks!

--
Skip Evans
Big Sky Penguin, LLC
61 W Broadway
Butte, Montana 59701
406-782-2240

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