Lots of gaming sites choose not to review many games for different reasons. Contacting a developer with the reason, or replying to an offer of review codes, does not constitute a blacklisting threat.
Someone gave away a couple D:OS keys after release on twitter, after they offered them to several sites/people and didn't get any takers. Is not being interested in the game, or not having time to do a proper review, etc, any different than being somewhat interested in the game but uncomfortable with some aspect of the content?
