Hi all! I have to make a photo contest on a wordpress site for a company that sells sweaters and t shirts. Something like this (look at the right) : http://corp-cdn.wishpond.com/wp-content/uploads/2012/10/Screen-Shot-2012-10-11-at-2.39.50-PM.png goal : grow our email list important option : share the photo contest on social networks with friends (facebook, instagram, etc..) What is the best ? a wordpress plugin (without bug or issue) ? someone know something good ? or an external solution (mobile friendly/responsive) ? -wishpond (look good but a little bit expensive) ? -Woobox (not sure about the email list option) ? -ShortStack ? Another question. Is it safe to share the contest on facebook if we ask to enter the email address ? Your help is very appreciated! Thanks!