I know this sounds dumb, but if I post certain information on here, can a TS security clearance investigation find that I stated different information on this website?
Iceman,
As long as you don't identify yourself, or detail information to such extent that could identify you, you should be fine. The SF86 does not ask have you been posting anonymously on this or any other website.
Simply be careful about what you post, and don't provide too much information that could identify who you are and you should be fine.
DSS and OPM personnel may very well monitor this website from time to time as do polygrapher examiners. It's always wise to err on the side of caution.
triple x