It seems that one of the tests is whether the person offering legal advice is being compensated somehow, and another is whether there is some kind of ongoing re

It seems that one of the tests is whether the person offering legal advice is being compensated somehow, and another is whether there is some kind of ongoing relationship. (I'm imagining a scenario where someone offered their services as an "immigration consultant" for a fee, for example, and they made promises that they could help you navigate the red tape of immigration.) Maybe if one posted enough legal advice on a message board like this one, some kind of pattern could be established, and the person could get into some legal trouble.