You got what's known as a "404 error".
That just means that the page you're looking for at SeductionOfTheInnocent.org (or LostSOTI.org) does not exist. It could be that the Webmaster made a typo when creating the page to which you were trying to connect. It's no big deal, really. You can get back to the site easily. When you get back there, you might want to e-mail the webmaster to let him know you got this error. That would help immensely in identifying the source of the problem, so it may be fixed.
When the Webmaster gets a notice that there is a problem with the site, he does not ignore the information. He responds to you with a polite and grateful e-mail.