No subject

> Given that this fragment technique is intended to improve the user exp=
erience, <br>
&gt; especially in the context of a popup window, I think that we may be ab=
le to <br>
&gt; document the correct behavior this in the forthcoming UI Extension.<br=
>
<br></div>
After thinking a bit more on this, I realized that while performance of the=
 checkid_setup call in the popup is important, it=92s a one-time cost so no=
t that big of a deal.<br>
<br>
A much bigger issue is the performance of checkid_immediate in an iframe. F=
or Connect, we do the equivalent of that on every single page. For OpenID, =
I can see a case where a relying party would run a checkid_immediate on eve=
ry page (to make sure the user was still logged in). In fact, a relying par=
ty might want to check multiple OpenID providers on a page load =96 maybe e=
ven dozens or hundreds, potentially. If they did that, then the performance=
 of each call would definitely be a much bigger issue, and this HTTP load w=
ould become more important.<br>

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