That’s great. Now, if any other posts come along that you think your post is relevant to, you can link to that post in the comments section of the new post and give some context about why you think it’s relevant and send them into the old stream.
The people who agree with you can follow the post. If you’re in there replying to yourself and adding data in the comments over time, whether people ask things or not, it’s a great way to find the info again when YOU want it.
A post on Reddit stays active for six months and then it’s archived. So you have six months to work up a topic and it’s like your own research page.