Each one of us has their unique set of things they like to do or care about. Finding others with similar interests would be nice.
A website and app that asks you about your likings and interests by providing a very long list of possibilities and letting you quickly and easily choose what you like and care about. You can also mark what you dislike. The system will then create a group with members that seem to be very similar. It’s up to the members to decide how to call the group and what to do next.
In many areas (wine, cigars, special food, etc.) it is tough to convey what something is really like.
Have a place where people can tell their experience with something new by liking it to a mix of 2 or more other – similar but better known – instances of the same subject. This way when you read about the new product you can have a better idea what it is like even before you buy it and experience it yourself.
For fun and having a laugh with (sometimes) a new perspective on things.
A blog where you can post these parallels between major news subjects and entirely different prosaic ones. For instance a headline: “Here is why a Trump rally is like a kids birthday party.” Then write a post about the similarities.