What is there to resolve? The comment I responded to was saying there's no useful distinction between the two words, I pointed out a distinction that I see between the two in what I think is accepted usage. Of course I see my opinion as more correct, since if I found something more convincing I would change my opinion. As the word becomes more widely used, usage will settle down.

Argh, my apologies. The comment above yours in the sequence I see defines spam as unwanted marketing content, yours as unwanted content in general. For reasons unknown I saw that one as the parent of yours.