Many metaverses actively use NFT and continue to develop and interact with each other. For example, a next-gen gaming NFT utility initiative named Shuna Inuverse (SHUNAV2) bypasses that process by making partnerships with the already existing and future appearing tokens to share their metaverses. More information about how it is possible to interact between different metaverses can be found here -
https://www.livebitcoinnews.com/lbank-exchange-will-list-shuna-inuverse-shunav2-on-january-5-2022/Open Sea is the most popular marketplace for NFT. Many people use Open Sea to create and sell NFT.
Now there is a big demand in NFT that is why a lot of new collections appear.
People buy NFT hoping for their future growth.
Because people buy NFT the demand in them continue to grow. That is why on Open Sea appears a lot of new NFT collections and users have a very big choice of what collections to buy.
Many people think that NFT is a good opportunity to earn money.