1) The site teaches the importance of ethics in the field of advertising. (source)
2) It shows how credible the site is through who they work for and what they do. (source)
3) You can connect to the site through Facebook and twitter. (twitter) (Facebook)
4) The events that they host or are a part of are open to the public to see. This helps with networking. (source)
5) The site makes it easy to find and join a club so you can start your own networking. (source)
You can find the site here.