You don’t have to pay a cent for the registration and for the admittance in the index of DMOZ, though it has a good effect on the ranking of a website in the search engines. The great reputation is based on the fact, that every site is verified and edited manually by redactors. So, the search engines infer from this, that these sites have a certain quality. The editing and the administration of the huge data bank of over 4 billions of entries, by Human Resource are only possible by voluntary and nonpaid co-operation of 70.000 redactors all over the world. But lately, the importance of DMOZ sinks, because of the immense size and the impossible manageability of the project. The same quality cannot be archived anymore. An effective quality-control cannot be archived in this dimension.