well if you are a first time player of The Sims, you will notice that on the lower right part of the feed, there is a phrase "Get Free Simoleon" Simoleon is the money currency of The Sims :)

You will also notice that the application name is called Sims Social ClsdBeta - it seems that the application will only respond to players who are directly invited to the Beta Testing.

if you are asking what will happen if you clicked it, well heres a screenshot..