I have a Vine just so I could see my little SIL's Vines of my cat, Princess Larrie. But I have never actually used it for anything else.
It took me a long time to even get in to IG. My oldest niece and nephew are the ones who talked me in to it. lol I'll just have to ask them what new thing I should join and then I'll have a legit answer to my question above and wysiwyg's OP.
Be careful they might be like duh haven't you heard of MySpace?
They need to stop trying to make MySpace come back.