It was actually the Swagbucks birthday freebie that got me back to using Swagbucks a while ago. I'll be honest, the lure of Google wins out most times, but I couldn't pass up the free points then I realized I almost had enough points for a prize, so I kept using it. So that's your lesson, companies. Give me more prizes.
Signup Freebie: no
Birthday Freebie: 55 free Swagbucks.
Remember, we have a full list of birthday freebies!