ProSiebenSat1, the German commercial broadcaster, on Tuesday remained cautious on the prospects for a pick-up in Germany's depressed advertising market, highlighting the growing importance to it of non-advertising revenue streams.

?So far, ProSiebenSat1 has seen no indications that domestic demand will improve substantially. As long as domestic demand remains weak, we remain cautious for the TV advertising market in Germany,? said chief executive Guillaume de Posch, although he added that he expected no slowdown in the market.