There are usually no objections to naming a site providing it doesn't develop into a serious, free advertising promotion via numerous posts promoting the site here. The URL is usually OK provided it isn't a direct link, as a direct link helps increase the other site's search engine rankings, so just eliminate the www as everyone will know to add that. So using OZmium's site smartgambler, as an example, smartgambler.com.au would suffice.
Moderator 3.