I'm currently thinking about asking about how to approach somebody on a dating website (OKCupid, Match.com, etc) that requires an introductory message. I'm currently grappling with the issue and I'm finding it difficult to find any answers online that would match the quality of a Stack Exchange answer. The problem is, as per the tour, I can't decide if it's on or off topic.
Specific issues with interpersonal skills
Yeah, it's an interpersonal skills question relating to communication between two people, so it can be on-topic.
Real problems or questions that you’ve encountered
Check, real problem and I can tell from other online help topics that it's a problem other people may suffer from.
On the other hand...
Questions that are primarily opinion-based
It is opinion based. I understand that this site is a little looser with that requirement than others, but this question still could be considered opinion-based.
Questions with too many possible answers or that would require an extremely long answer
This is what I'm mostly worried about. Depending on the person, there may be an incredible amount of possible introductions that would work with different people. Factoring in the website, different sites may have different audiences or resources with which to introduce yourself.