Sending LW a few buck every few months is supporting the program so that they keep on developing it and letting people get it free.

It's an open source project.

They dropped the ad support and hope they can raise money to keep on developing, by offering a Pro version.

Sheesh! Don't "donate" unless you want to help the project continue, but don't take away the little that they get from Pro. Use the Basic instead: there's really not that much difference between the two.

Whatever you do, try to do something that will help the project develop. Why would you want to help the many powerful groups who want LW to be shut down?