Anyone how owns a website should agree that the hardest thing of all is to keep an online “customer” engaged, so that he’ll be back again and again. We are competing for our customers time, so the offering should be really worth it. You have one chance (a few seconds actually) to prove it, otherwise you probably don’t see him back again.
Here is a nice article I’ve found on Brainstorm Digital Blog posted by Miriam Shaviv – July 30, 2014 titled What every marketer needs to know about great lead-magnets explaining the lead magnet concept, while providing tangible examples! Nice food for thought!