Until now the options to get a free premium upgrade where by doing add-on reviews and by uploading screenshots, now we have added the option to win more points by just showing your support to SurClaro and clicking the Google +1 Button found on the top left header of each page.
Points earned this way will not expire and will give you 10 points for +1ing general pages and one point for each add-on or image you give a +1
For more information about the "Rewards" program please click here.
If you want to know how many points have you earned please visit your "Account" page.