Try reddit. You'll almost always find a subreddit perfect for what you need. But I recommend you have a decent looking stock and shop before doing so, because you're basically going to get all your views at once (ie, all the regulars in that subreddit will see your post when you post it, all at once), so you're going to want to make a lasting impression when you decide to do it.
I wound up getting tons of views and sales when I posted in the botany subreddit, then all at once the views stopped after all the regs had seen it.
