Well, if you're going to be that strict, then technically none of my posts are of interest to people developing their own roguelikes, unless you count "me blabbing on about the progress of my roguelike" of interest to folks developing their own... I mean, I'm not getting into algorithms or anything useful; just sharing what I've done so far. Maybe I misunderstood what you were looking for, and so my blog wouldn't be a good fit for your aggregator?
It isn't a case of strictness. It's a case of focusing on a topic.
The aggregator is for people that want some insight into how others are working on their own roguelikes. They don't need to be discussing algorithms, while occasionally some posts on that topic are interesting, they might be discussing how they did their UI. Or how they implemented some element of their game world. Or they might even describe how some part of their game works, with screenshots, and ask for thoughts from other developers.
There's a difference between this and release notes.