Welcome aboard.

If you want to post memes you didn't create, it is best to set your rewards to burn.
You won't get paid, but the people that vote you will and you will get the reputation points.

If the right people see that you are getting paid to post memes not of your creation, you will get flagged, you will lose reputation points, and you still won't get paid.

Hive is a game, games have rules, you don't have to follow them, but you do have to face the consequences of not following them.

The best policy, when posting the memes of others, is to set your rewards to burn.

I have a community for that, created/hive-177800, but you don't have to use it if you don't want.
Up to you.

Good luck.