sentences:  However, recipients of the program were not told that it also had a censorship program, which blocked critical sites from being viewed on the user's computer, if the sites were deemed dangerous.Critics of Scientology have referred to the program as "cult mind-control for the 21st century", and asserted that it stifles freedom of speech.One software developer stated that though he thought spam filters in general were a good idea, he found it "disturbing" that "a huge number of the terms that are banned are completely unrelated to the stated goals."