Well, a few of my friends have used these domains because they were free, but it seems like they kind of use bait-and-switch tactics, monitoring DNS traffic and

Well, a few of my friends have used these domains because they were free, but it seems like they kind of use bait-and-switch tactics, monitoring DNS traffic and asking "owners" to pay a hefty fee for the domain name once popularity crosses a certain threshold. Webmasters also have little control on records and other parameters that are standard at other registrars.