what is Contributor Only?

just numbers.

What can't you understand about "contributor only"? Giveaways for people who contributed by making giveaways, obviously.

It's an unfair system in which the bourgeoisie oppress the proletariat masses. Viva la revolucion!

it means u must give away non bundled games, or dlc

Giveaways exclusively for those members who have gifted a certain dollar amount worth of games through the site.

Read the FAQ