Do threads you post delete themselves?

[AWPortunity]

I had a couple of unresolved threads posted that I now can't seem to find. I can only assume the threads were removed or untracked for some reason. Any insight would be nice. Thanks.

 

[rgd1101]

http/www.tomshardware.com/answers/id-2618615/custom-built-gaming.html
http/www.tomshardware.com/answers/id-2618657/quality-pre-build-pcs.html
http/www.tomshardware.com/answers/id-2619644/downloading-free.html
http/www.tomshardware.com/answers/id-2619777/thinking-starting-build.html
and the 2 that you added today.