SFX cleared for sampling or not

I was going to create some sound effects for upload to Pond5 but I don't know if I should set them to "cleared for sampling". What are the pros and cons. I have no experience in selling SFX and want to get some reward for my efforts, so any advice would be appreciated.

I am sure it says in the terms. what exactly it grants the end user. but I do it. I don't see the harm really. Its not like they can resell it.

Thanks for getting back to me, I will have a look at the terms. I see many people selling SFX are not registered with a PRO or do not indicate they are. So if they tick the box, cleared for sampling, I don't see that they have any protection but I could be wrong maybe the terms will clarify it.