I think the Daily Cap is intended for situations just like this. So if you see someone with 5k+ reputation it's a good sign they've given good answers to a fai

I think the Daily Cap is intended for situations just like this. So if you see someone with 5k+ reputation it's a good sign they've given good answers to a fair few questions (or asked good questions) over a period of time rather than just got lucky with a question that found its way on to Twitter. Because reputation entitles you do certain things like close questions SO is careful about how you can earn it.