This post is going to be short(ish) - why? Because that's what a comment is supposed to be.
Imagine you write a blog post you're really happy with and when it comes to publishing it, you're redirected to some crappy drop down window where you have to select which profile you'd like to use.
Bet it's happened to you when you've tried to leave a comment on someone's blog.
I mean, here's the thing.
You visit a blog for whatever reason (there are many!) and you like what you read, so you decide to let the author know by posting a comment.
Personally, I don't see the point of leaving a comment unless it's adding to what's been written, so I tend to give an opinion, an example maybe...
...having said that, it's really important to keep it light and on topic so as not to detract away from the great post you've just read.
So, you write your comment and try to publish it...
...and if it's happened to you (a couple of times to me now) where for whatever stupid technical reason, you can't publish your comment or retrieve it, what do you do?
Do you go through the motions again?
9 out of 10 times, that's probably a big NO.
So here's my take on this.
If you like someone's blog for whatever reason, join it if you can.
Yes, you'll have to go through the tedious steps of joining, but next time you want to leave a comment, it SHOULD be easier.
And let's be clear about this, everyone likes to read comments and if by the same token you like to read blog posts and get something from them - then I think it's fair to say you should leave a comment...
...I tried earlier and it didn't work which is why I'm posting this now!
Anyhooley, thanks for reading and please leave a comment : )