No. The idea is that you use their service as opposed to running something on your own machine, which eliminates you as a nefarious source of hanky-panky. Think

No. The idea is that you use their service as opposed to running something on your own machine, which eliminates you as a nefarious source of hanky-panky. Think about running their list randomizer to pick one or more names from, say, a list of raffle entrants. The "trust" isn't that the result is going to be cryptographically random or anything like that, it's just an external service you can't monkey with, which avoids accusations of cheating.