You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or
API help for more information.
<?xml version="1.0"?>
<api>
<query-continue>
<allusers aufrom="Z377 buy clavamox online cheap" />
</query-continue>
<query>
<allusers>
<u userid="3945" name="Y0k1 buy arava online cheap" />
<u userid="3846" name="Y33m buy zyprexa online cheap" />
<u userid="3721" name="Ybmk buy cardura online cheap" />
<u userid="3920" name="Yenm buy zestoretic online cheap" />
<u userid="3926" name="Yi6n buy zithromax online cheap" />
<u userid="4214" name="Yizhenwilliam" />
<u userid="3837" name="Yk9p buy clonidine online cheap" />
<u userid="3875" name="Yvey buy compazine online cheap" />
<u userid="3726" name="Yytl buy meclizine online cheap" />
<u userid="67" name="Yzbclg" />
</allusers>
</query>
</api>