NFT Indexing is a process that reads, recognizes, and displays asset owners' NFTs before listing them on the marketplace.
All users need for NFT Indexing are their smart contract addresses, which should already define the Token URI’s IPFS or API and most likely follows the JSON metadata standard.
NFTs would show up in the "Other" section when applying the game filter.
No. There is no charge for NFT Indexing on the platform.
Yes. Asset owners can delete unnecessary NFT collections by clicking the "X" icon beside one collection's name.