A Tribus is a DAO's wrapper with extended social-networking functionalities. The Tribus is equivalent to a "subreddit" in web2.0 terms.
The Tribus is based on the Community Ownership Economy model. Therefore, the activity over the Tribus, beside creating a social experience, it re-enforce its corresponding DAO's tokenomics.
The PublicSquare Tribus is inspired by the Proposal of Arweave's Founder, Sam Williams for a "data protocol for an unbiased public square".
Any user with an Arweave wallet can post in the PS Tribus without any DAO's restriction.
Usernames as Assets
DecentLand team brings a new usernames system based on scarcity. Usernames are are mintable, transferable, and tradable assets. The username's owner has full access over the username's ownership.
Posts as NFTS
Each post, in any Tribus represents a new minted NFT token. In other words, the user's posts under DecentLand data protcol are NFT tokens (PSTs).
The posts creates a new door in NFT industry for tradable plain/text assets.
To learn more about the keyfeatures, protocol's base layer, tokenomics, and how DecentLand protocol is built, have time reading the project's paper.