I'm looking to manually message my website URL to a select group of people via Facebook. This isn't some elaborate project that is going to require a bot, but I'm looking to get this URL to about 2000-5000 people. I have all summer and I sit at a desk for most of my mornings, and I'm looking to get it done over a course of a few months. It's not a scam or anything sketchy - it's a legitimate e-commerce website that has a very specific market. So, with a select group of people already in mind, I was thinking about manually sending out 20-40 messages an hour. Am I going to run into a problem?