Affiliate system allow affiliates to earn a profit through purchases/subscription made by their clients. It encourages your members to share and introduce your website to others. It is a perfect tool to track referrals to your website.
Meme Generator Module allow your members to add caption to popular internet memes (over 30 popular memes pre-installed) or upload their own image. It is fun and easy with a likelihood of bringing more Memes loving visitors to your website.
The world is said to be a global village filled with people from different countries. People have friends from different part of the world and it becomes imperative to know where they are from for effective communication. You don't have to search for user info to know his/her location - just install Flags module to get flag icon next to user's name to know his/her location.