Ongoing Topic - new post or just add comments?

[Greenguy]

I have questions

The other day I posted about Energy Conservation & what I do to conserve energy:
http://www.blinkerfluid.com/category...-conservation/

I remembered a couple of other things that I do over the weekend & I wanted to post about them as well. Do I:
1 - edit the original post?
2 - add a comment?
3 - start a new topic? (and reference the orig post)

****

Today I'm going to make a post about some teams I hope make the NHL Playoffs. Once they do make it or are eliminated, I'll want to comment about that as well. So, same question:
1 - edit the original post?
2 - add a comment?
3 - start a new topic? (and reference the orig post)

[Fonz]

Start a new topic and reference to the original post. If you edit the original post you won't get that much exposure.

... or something like that ...

[cd34]

I know if I were reading blogs on a consistent basis, I probably wouldn't reread an older post to see if it changed. I would however follow categories that interested me and a new post would signify new information. For those that stumbled across that post, you could reference the earlier post from the archives.

good post on your energy usage.

[walrus]

In both instances, I would make a new post and link back (trackback) to the original post. Much as I would if I was quoting something from someone else's blog.

[Greenguy]

That all makes sense - thank you