It is sometimes working, sometimes not working. Even on one search, it work on some pages (page 8, for example) and not work on other pages (page 1, for example).
I tried "people search", because it seems to be a search term that always has sponsored links.
I clicked on "view source" for the web page.
Here is a search result for Yahoo! on the left side:
<div><div class=g><!--m--><link rel="prefetch" href="http://people.yahoo.com/"><h2 class=r><a href="http://people.yahoo.com/" class=l onmousedown="return clk(this.href,'','','res','1','')">Yahoo! <b>People Search</b></a></h2><table border=0 cellpadding=0 cellspacing=0><tr><td class="j"><font size=-1><b>Search</b> by name to find address and phone number, or email.<br><span class=a><b>people</b>.yahoo.com/ - 15k - </span><nobr><a class=fl href="http://64.233.167.104/search?q=cache:RVxmO6tTe90J:people.yahoo.com/+people+search&hl=en&ct=clnk&cd=1&gl=us&lr=lang_en">Cached</a> - <a class=fl href="/search?hl=en&safe=active&q=related:people.yahoo.com/">Similar pages</a></nobr></font><!--n--></td></tr></table></div>
Here is a "sponsored link" result for Net Detective, on the right side:
<font size=+0><a id=an5 href=/aclk?sa=l&ai=BIANobrSkR_KfBZymiAG1-LyOBpfI1SGT7NvJAur_7gSgwh4QBRgHKAg4AVC6-86y______8BYMme44mUpJgToAGt2I7-A8gBAdkDULjOEN5DWAjgAxA&num=7&q=http://orders.hdpublishing.net/cgi-bin/shop.cgi%3Fproduct%3DND%26affiliate%3D086403&sig=AGiWqtwVmxnUHnj4B9klZiwaWKMTNP6MxQ>Net Detective</a></font><br>Find Out The Truth About Anyone<br>Background Checks Driving Records<br><span class=a>www.NetDetective.com</span><br>
By the way, If I Google "netdetective", it appears in the search results, and SiteAdvisor gives it "red" :mad: rating.
By the way, sometimes there are additional sponsored results on the left size, above the search results. SiteAdvisor works with these.