Is it possible to stop google from indexing tag pages ?

Hello,

I am using the tag functions in k2 and when I check what google indexes from my website I see that it also indexes pages such as : http://www.yourwebsite.com/web-design/i ... ATION.html

in item.php (line 298) I tried doing the following to stop google from indexing tag pages as follows:

<li> <a rel="nofollow" href="<?php echo $tag->link; ?>"><?php echo $tag->name; ?></a> </li>

I added rel="nofollow" but it seems this isn't working.

Am I missing something ?
I basically don't want any links indexed by google which has the word "/tag/" in it, I just want my normal links to my pages, and no tag pages indexed.

hi,
understand one rule, google do what he wants.
maybe unique metatags with no index will help, but ... this is job for php programmer.