http://www.linuxquestions.org/rules.php
Those indicate not to deliberately advertise, which creating a thread solely to present others to your or anyone you know, site.
You agreed to these rules when registering, do not create threads to advertise. If that site has helpful information that might lead to solving some members question or problem they ask here, feel free to link them to such article, howto, etc..
If you feel this is not the case, feel free to contact the admin of this site who created such rules.
Regards.