At the above link we find a letter of disassociation from the JWs written by one who identifies himself as "spiritualbrother." Many, like this person, are leaving the "Jehovah's Witnesses" organization, but are at the same time being misled by the lies and falsehoods that are being spread abroad. While I am not associated with JWs, the letter does contain a lot of false statements concerning Charles Taze Russell, and the purpose of this post is not to defend the Jehovah's Witnesses' organization, but to address those false statements concerning Russell, or to give links where one can find information about those statements.
I am glad to see that "spiritualbrother" has come to see a clearer picture of the faithful and wise steward. (Luke 12:42-48) Nevertheless, part of being faithful and wise in service of the Master would require that we also be careful what we might say about fellow servants. We should be careful not to just accept and repeat what people might being saying out of spite or hatred, but rather we should check to make sure that what we repeat is not actually distortions and falsehoods that are being spoken against a fellow-servant of the Master.
Regarding the mission of the church, please see:
Regarding "blood transfusions," see:
Regarding the "holy name," see