Additional queries:

* Are these forums and DDL sites established for profit? How do you earn revenue from these sites. For example, the DDL site has links to various content which people can easily download without paying the forum or DDL anything.

*How much is the estimated monthly cost of running forums like KWWHunction or DDL sites? Is there a profit objective or it is altruistic.

*People who upload content to one click hosts and post links on various sites. Are they doing because they like sharing or for profit? For example, they acquired the content (e.g., movie DVD or BluRay or Software), which must cost them money, then why do they provide it for free to others.

*Are there scripts that allow uploaders to upload to multiple forums and blogs automatically?