In reply to pavelk:
Yes, Tisá, apologies for the spelling mistake. The last few times I was climbing there, all teams that were toproping there were Czech (we were leading), so apparently no one climbing there cares about this rule.
Of course, you should always run a length of static rope from the anchors on top across the edge, and then run the toprope through your own carabiner. This prevents damage to rock, anchor, and rope! I totally agree that teh rope grooves you find on many well travelled routes are extremely ugly.
However, as long as you do this, there is no reason not to top rope, and I am glad that in Tisá at least the locals seem to be more reasonable about this and handle it in exactly this way.
We have the same discussion a few km North with the sandstone Taliban in Saxony, and as far as I am concerned, they can simply f*ck off (again, as long as I am not damaging the rock, noone tells me which style I should climb in).
CB