Since this topic was created we've added a lot more functionality to the proper devlogs feature. If you're looking to maximize your exposure then I recommend using that instead of posting at topic here in the community here. We have a dedicated link in our header for the Devlogs page for people to discover those posts. This board still exists for people that like to use a thread format for their devlogs, but the amount of traffic through this section is a lot less, and likely mostly other developers.
As a side comment, building a community through devlogs can be challenging. There's no guarantee that someone is going to want to participate in the comments on your posts. If you're writing posts just for the sake of advertising your project then it may be even harder to draw attention to your project. I recommend trying to write posts about something interesting about your project if possible. I wouldn't call it an exercise in vanity though, I think that marketing indie games is challenging and you should experiment to find what works for you.
Thanks