If I put an image in a post in this thread, then I can get a list of the IPs of the people who have viewed the thread. Cross refer a few threads, and I can probably isolate your individual IP.
is it really possible to place an image - even an invisible image - that works like the traking things that are sent via e-mail? the images that services like mailchimp uses.
edit. sorry, i should have read the second page too before asking this question.
Yes it is really possible to post images as long as your current rank allows it. junior member and up is the ideal minimum rank that can be able to do it.
I forgot , copper members that pays for membership is also another rank that can be able to allow images on their post.
And about the ip address thing , i dont thing any of us is concerned about it. ip address isnt really accurate because some of us are using a vpn or a virtual private network in order to browse the forum, so i think it is still pointless to trace the user.
Bitcointalk.org is now verry secure because the forum has upgraded its security lately after the hacking had occur.