I can't see that the provider of those discussion boards has any responsibility to dig people out of any hole they may have created for themselves by injudicious posting.
You may be surprised to hear that I'm broadly in agreement with that particular sentiment.
However, there are exceptions to every rule. For example, I am aware of people who innocently posted materials to forums, and where subsequently asked by employers or clients to remove the information on the grounds of a breach of non disclosure. Thankfully the forum owners in these cases where little more enlightened, and the member wishes to modify posts was granted.
I can see for example a situation where a member posts materials in good faith over a number of years, and later enters into an agreement with a publisher, who may of course realistically and reasonably stipulate that particular material is removed from the public domain prior to publishing.
In case you forgot, there are copyright laws in the country from which you chose to do business. At a push, some of the stuff written about Mr Arabian could be considered as slander, and T2W refusal to remove this material makes them in law, equally liable for the consequences.
You know as well as I do that T2W capitulates every time to any 2 bit vendor without a pot to **** in, and should members get stroppy and start sending solicitors letters, in all likelihood, you'll capitulate just as easily.
There's no justifiable argument for failing to comply. Technologically, its effortless, it would take a matter of seconds. Members have even offered to pay for the service. Most of the material thats being removed is inaccurate, out of date, lulzy nonsense. Most of the threads are dead and recieve little traffic.
T2W needs to get some perspective. Tim talks about 200k+ members, but the truth is most of the people who participated in those threads have long ceased to visit the site, and the majority of new members dont want to read em anyway. You talk as if removing a post from a thread is the equivelent of slashing the mona lisa with a stanly knife. Even if you deleted my posts at T2W, anything remotely of value that I had to say relating to trading would probably still be available to the whole world on sites that take trading a little more seriously.
The fact that T2W staff and moderators have spent infinately more time justifying their actions than it would take to hit the delete button speaks volumes.