Chances are you know that social media is pretty important to your business - both from a brand perspective but also as a way to drive people back to your site. But most of us are relying on some subtle social buttons at the bottom of our sites to encourage people to join our social following. Using a flyout to encourage people to follow you is a great way to drive interest among your visitors without spending money on social ads.
In general, these campaigns work best when you have someone who has already shown real interest in what you do.
For example, set up a flyout that is only shown to people who have signed up through a prior campaign and visited your site 3 or more times. That way they are ready to invest more in a relationship with your brand.