For it to be spam, it has to be stupid, pointless and annoying. The status of "this" as spam is shaky. In one instance it may not be spam, but in another, it may very well be spam. However, I think that it still should be banned, or at least looked down upon, with strict and clear guidelines made about it in a sticky. Even if it isn't spam, I don't think it should be there, and that quality posting should be encouraged. It doesn't make you look very smart if you post one liners, it makes you look either lazy or stupid. It definitely doesn't support the person you are supporting, and it may even hurt their point. Some people will see who is agreeing, and then assume that they are wrong (or at least be less likely to agree), despite how good their argument might be. If only there was a minimum word limit for a new reply/topic. Like the submit button would be disabled until enough words were input in the textbox, or it displayed an error message when there wasn't enough words, and not post it until it was fixed. Probably not possible though.