Just so everyone is aware, the recent flood of sex-related postings on this board link to a site that will automatically download and install an executable file on Windows systems. I haven't checked it personally, but this executable almost certainly contains a Trojan that will turn your system into a spambot. So if you're a Windows user, don't even click on the link in any of these messages.
If you're a Mac user, click away - you're immune. There's no sex content on these sites, however, so don't waste your time.