Threads from other domains

In the past in the forums for this site I have seen threads in forums in other sites, such as vbdotnetheaven.com and longhorncorner.com. Today I see many of them in the Recently Updated list. The problem is that when I try to look at the threads, I can't look at them; I get the error "The page cannot be found". The following are sample of the threads that I get the error for.

• http://www.longhorncorner.com/Forums/UploadFile/93591
• http://www.vbdotnetheaven.com/Forums/UploadFile/4848
• http://www.longhorncorner.com/Forums/UploadFile/93591
• http://www.longhorncorner.com/Forums/UploadFile/97276
• http://www.dotnetheaven.com/Forums/UploadFile/102558
• http://www.vbdotnetheaven.com/Forums/UploadFile/4848