[chillfox]

Based on the number of guys who think LinkedIn is a dating site I don't see why there wouldn't be people who think it's a porn sharing site.

[inemesitaffia]

Every site that allows commutations will be used as a dating site.

Sometimes you might be identified on the site and then communicated with on another channel.

[lazide]

The only thing not used as a dating site is dating sites.

Those are for prostitution. (Somewhat /s)