Abstract The representative economist does not understand the two most important phenomena in the economic universe: profit and income. Because of this economists have nothing to offer in the way of a scientifically founded advice. Therefore, the contributions to economic blogs cannot claim to offer more than personal opinion. Of opinions, though, economics always had plenty. What is needed is knowledge – scientific knowledge, that is. With the outline of the correct economic paradigm at hand it is straightforward to refute obsolete approaches. For this purpose the economics blogs are ideal. A selection of recent comments is reproduced in the present paper.