Didn't that answer get voted to -6 or so?

Isn't that what meta is for?

Editing a closed question also automatically puts it into the reopen review queue.

@est Your question was closed. That means you can edit it so that it can be reopened.

@est What does that have to do with anything? You can improve your question at any time.

@est I did suggest an edit, but you decided not to take my advice.

I suggest you put together a list of your favorite tags, which you can then browse. You may find it easier to find interesting questions that way.

I'm one of the Plesk haters, and I did not downvote or vote to close this question.

You should also know that the person who posted the answer gets notified of the suggested edit, and they can take action on it as well if they wish. Though since he hasn't logged on since before you made your edit, it would be nice to give him time to update his answer :)

I wouldn't hesitate to warn somebody of security problems with PPTP, but if it isn't an answer to their question, or at least attached to an answer, it shouldn't be posted as such. (Though, sometimes, it is the answer.)