Obviously I know what spam is in general but it seems to have a different meaning here. Most often it is used when somebody has the gall to not agree with someone's post. When the OP doesn't get a flood of responses all stroking them and saying what a great idea is and, rather gets a bunch of people telling them that it was a stupid question, etc. they accuse the people of "spamming" them.
Could someone break it down for me? I really want to be one of the cool kids and use all the right lingo here.