I know that it would be good to have some hubs up before I apply for an Amazon Affiliate Account. But once approved, will I be able to go back and add Amazon capsules to the reviews I have already published as hubs?
You can add Amazon capsules to any hub you choose to. You are not limited to only a specific time or format with regards to Amazon. If you have reviews of products, goods, books or anything else, then it might be a good thing to add Amazon capsules to them, because you could make extra earnings. Enjoy!
You can help the HubPages community highlight top quality content by ranking this answer up or down.