Occasionally people (myself included) provide answers or comments to questions which are clearly off-topic. Here's an example I left a comment on.
I was wondering if this is okay, and considered as just trying to be helpful, or whether people think that it undermines the purpose of having off-topic questions and encourages others to ask such questions.
Do people think it's okay to leave a comment but not a full answer for example or should these questions just be left unanswered in any form?