I didn't get your point tozp, both sites are the top social networking websites these day.
We've been using these methods in generating traffic and marketing:
1. Add people/send friend request using the "Are You Interested" application
2. Creating of the website's own Group and then invite your contacts to (join) the group
1. Use keywords on your profile that is related to your website/business (ie; "#dating, #travel)
2. Share links on your profile, while talking about non-business too.