For e-commerce buffs, how do you evaluate the effectiveness of online/digital advertising?<div><br></div><div><span style="font-family:arial,helvetica,sans-serif;font-size:13px;line-height:16px;text-align:left;background-color:rgb(255,255,255)">GM currently spends $40 million a year on its Facebook presence but decided to pull out due to its &quot;ineffectiveness&quot;.</span><span style="font-family:arial,helvetica,sans-serif;font-size:13px;line-height:16px;text-align:left"><br>
<br>Read more: </span><font face="arial, helvetica, sans-serif"><span style="line-height:16px"><a href="http://goo.gl/9f1zs">http://goo.gl/9f1zs</a></span></font></div><div><br></div><div>Bernard </div><div><div><br></div>
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