Yeah it happpens on some pages I just realized. I tried loading a random SR page and didn't see it, but then using the one Pine suggested it happpened. It also opened a Tor circuit to those pages. It is happening because the icons displayed are hotlinked from those servers. This opens substantial anonymity and security holes and should be immediately taken care of. For one you are exiting the Tor network when you load those pages, and getting all the risk that comes with that. For two even if you assume that the SR hidden service can not be traced and monitored, I bet AIM and ICQ will hand over their server logs, so if feds own your entry guard they could correlate your entry traffic with AIM / ICQ server logs of Tor exits that loaded those images, to deanonymize people without actually watching traffic arrive at the SR server. Also you might end up opening those hotlinked images via a circuit you are using for other things, and end up linking your actions together (for example maybe you were talking in an IRC when you loaded that forum page, and the hotlinked icons were loaded through the same circuit that you were using for IRC. Now your presence on that IRC server is linked to your activity on SR.)