Messaging apps are going to take off in near future. And this starts by opening a marketplaces inside them. Solana based Secretum app has already started this with allowing the ETH based NFTs to be sold inside the messaging app. 

Secretum is a good start towards the future where the messaging app can have their own wallet, NFT storage, marketplace and even DeFi in near future. Who knows when that would be happening? But it's a start and you can see secretum has put up one step towards that future. 

OTC trading means over the counter trading. Something many NFT marketplace does not allow but for those who do, you have opened up a good option 

What this means for users?

With few button taps you would not only be able to use the messaging app for the typical encrypted chats but you can also make use of them for the OTC trading. So this is a good option for those who are pretty much active in the NFT space and also want to make use of the Solana staking for crypto investment for node based rewards.

A lot of new features and changes need to happen before the messaging apps can do any difference in order for this app to become WhatsApp killer. But it's a start and we can see how other competitors like Telegram, Whatsapp and others would build from this point onwards. 

Interesting changes happening in the Solana blockchain and definitely helping both investors, consumers along with the NFT ecosystem.