Is there such a thing as tagging too many "great answer"s or "great questions"s?

Sometimes, especially in the social forums, the answers make me laugh so hard that I have at least once spit out the water I was drinking. In fact I joined Fluther to “great answer” someone who was explaining how she cries when she receives poor customer service. I just want to know the etiquette. I genuinely appreciate the answers / questions I tag.