That may be your personal view.But all of them are good although have little effect but still worth.If you have a blog or site with commercial purpose then you must have to work with them.Nothing is waste of time in the web.Everything has the effect.
You need not to be desperate. I do not know why you are telling so!! It is not waste of time. Thousand of people are getting benefit from those.
I don't know why are you saying that. I am really confuse what do you want to say. Are there any other option, mention here. I will try that.