It's perfectly ok to rehash something you posted on many months back. In our head, we think..."I've already done that." But for just about anyone else, it was so long ago they either missed it or weren't around just yet.

This is different than simply re-posting..more just a current take on something you've not talked about in a while.

I also liked what the other commentor said about trying to keep a list of ideas written down for a rainy day. I tend to do that myself.