This topic was started on 24th November which is yesterday, and was last edited today, I believe somehow that through the edit you did today, you changed some phrases to make the post better understandable, I do not know what the initial post was like, but I go with what stompix said.
The way you phrase your words in a sentence really plays an important role on how users will understand your post and what kind of comments they will chip in, though this does not rule out the fact that low quality posters will still spam, but in the situation where the OP fail to phrase the post in a way that it will be easily understood by everyone or atleast, the majority of reader, the OP shouldn't blame commenters for posting comments that are outrightly out of point.

In a post where you know most people will have a hard time understanding what you mean, to help them understand what you mean, you give illustrations, like an example that will help explain what the post is all about...
This is how you help your readers understand you and give you better comments that are on point of the topic..

And like I said above, doing this does not mean that low quality posters won't still spam, they will, but the spams will be insignificant or even unnoticeable if the majority of readers clearly understand the OP.