Couple of interesting articles. First on the defense of having a registration-free commenting system:
Further evidence that the Ni-Chan paradox still holds:
Registration keeps out good posters. People with lives will tend to ignore forums with a registration process. Registration lets in bad posters. Children and Internet addicts tend to have free time to go register an account and check their e-mail for the confirmation message. They will generally make your forum a waste of bandwidth. Registration attracts trolls. If someone is interested in destroying a forum, a registration process only adds to the excitement of a challenge. Trolls are not out to protect their own reputation. They seek to destroy other peoples’ “reputation.. Anonymity counters vanity. On a forum where registration is required, or even where people give themselves names, a clique is developed of the elite users, and posts deal as much with who you are as what you are posting. On an anonymous forum, if you can’t tell who posts what, logic will overrule vanity.
And second, an old but interesting recount about software piracy for a company owner: