Quote from: OpenYourEyes on October 28, 2012, 10:50:39 PM

Quote from: psy on October 28, 2012, 10:44:08 PM

Quote from: OpenYourEyes on October 28, 2012, 10:37:26 PM

Quote from: fergalish on October 28, 2012, 10:25:15 PM

Quote from: OpenYourEyes on October 28, 2012, 09:32:07 PM

My post above contained a tracking beacon which was logging IPs & useragents; the link in my post went to a free hosting provider which I set up using a manner of techniques to log information about visitors (using JavaScript, PHP, and an embedded flash player which was requesting a video from my server), and then after a few seconds forwarded you to a legit blog post.

Fascinating! How can you possibly embed such code in a forum post? Surely this indicates a serious bug in SMF, the forum software?

One of the IP addresses you mention is mine, and I'm not joe23. Thanks for doing the xx.xx'ing - I'd hate to have a bunch of you guys suddenly trying to hack my box!

As theymos said, just an image: a simple 1px transparent gif hosted on a server which logs IPs of those who requested it.

If you wanted to catch only joe's IP you should've sent him a PM and not post in in this thread.

BTW, joe is gweedo. Why? Because gweedo can't stand BitcoinINV lol

I thought of that, but if I was in his shoes I would have find it quite suspicious of being asked to click a link, especially with a strange free hosting domain name, but hey, I'm paranoid by nature.

No need to click any link. You just embed it as an image on the PM just like you did in the thread reply. PM's can also use bbcode.
As soon as he opened the Messages page, which has your latest 20 or so messages showing, it would call your script and you'd have the data you wanted, but without all the garbage Wink