I'm with you on this, I do not upvote spam... nor will I upvote that comment and have not supported the article. They will be engaged in the comments with conversation (if comment is not spam), but really people expect support without first supporting... brain deficiency. Here is something I just wrote to a person that spam commented on my blog:
The best comments are from those that comment on the information, they gain better reward and help more people with a real thought and idea from the post... if you impress people with comment according to the content, you will gain more followers as well. Just a thought to help you.
Haha! I keep thinking we should have a backwards day, where the whales/dolphin message spam, ask for votes and DM links to minnows.