I have won a few things recently (all on facebook), and here’s my tip… find things that not many people have followed the rules on.
First thing I ever won was a Striker Suit from IDO last year on facebook. Simply had to like, share, and comment. You can see how many times the post has been liked, shared, and commented on, and some people just don’t follow rules- those numbers should all be the same. So odds were already decent, say 1/500, just by people not following all the rules.
Won tickets to a Tim McGraw concert by commenting my favorite Tim McGraw song on a radio post, well only about 30 other people also commented. For a 1/30 chance to win tickets, sure, I’ll comment.
Have won numerous BiPro (protein water/shake company) products by also simply commenting on posts that not many others have.
If it’s something where I see thousands others have also done the necessary steps to enter, then I’ll generally not sign up.