I want to read a *.indd file, where can I find information about its format?

[jacek]

lawmakers are as smart as the Polish.

To be honest it's one of the rare cases when they did something smart (apart from opposing software patents and preparing new anti-spam regulations), but I guess it's just because politicians leave such uninteresing problems to experts instead of dealing with them themselves.

There should be somekind of international website where you can look what laws exists in different country in this area.

IMO it would be very hard to keep it up to date, but maybe EU has one.