Why friends stop at 150
DatsMe caps your friends at 150 on purpose — it is a statement about what the product is for, not a technical limit or a paid tier you can raise.
150 is not a quota that ran out and it is not a number you can pay to increase. It is the product's claim about itself: this is a place for people you actually know, not an audience of strangers.
Most of what feels bad about large social networks follows from unbounded reach — the pressure to perform for people you have never met, and the way a message meant for a few ends up in front of thousands. A bounded graph removes the shape of that problem rather than adding controls to manage it.
It also changes what the rest of the product needs to do. When the people who can see your friends-only content are a set you could name, Who can see what becomes a decision you can actually reason about instead of a guess about an audience you cannot picture.