United Airlines requires that you have some sort of activity every 18 months or else your points will be lost. While I think think it is a silly policy and I hate when things have an expiration date, it really is super easy to keep your account active. After all, any points earned count, it does not have to be points from flying.
Well United is offering 600 miles for joining a website called “Opinion Miles Club.” You also must complete a survey to get the points. Points will take 6-8 weeks to credit to your account.
Now you can still sign up and take the survey even if your miles aren’t expiring and you just want the extra points. However, with such a little amount of points my main incentive usually is pushing out my accounts expiration date!