Context: Free ISPs are Internet service providers that provide service free of charge. Many free ISPs display advertisements while the user is connected; like commercial television, in a sense they are selling the user's attention to the advertiser. Other free ISPs, sometimes called freenets, are run on a nonprofit basis, usually with volunteer staff.[citation needed]

Question: What are free ISPs?
Answer: Internet service providers that provide service free of charge

Question: What do free ISPs display in exchange for service?
Answer: advertisements

Question: What are free ISPs similar to? 
Answer: commercial television

Question: How are freenets run? 
Answer: on a nonprofit basis

Question: What type of ISPs are free of restrictions?
Answer: Unanswerable

Question: Who accepts donations instead of charging for services?
Answer: Unanswerable

Question: What kind of television are free ISPs like?
Answer: Unanswerable

Question: What are for-profit ISPs called?
Answer: Unanswerable