Even with a strong Captcha system in place, you will still find users trying to manually spam your web site. They tend to be people who discover your site through a very specific search engine query, for which they would like their own site to also rank well, and they hope that by adding a link back to their site from yours this will happen. Using this recipe, you can specify a set of keywords that will trigger spam detection, and then use the level of spam certainty returned by the function to decide whether to ignore a user post. https://www.chat-to.dev/post?id=11#php#programming
Sure… But assuming you’re running a business, and you want potential future customers to be able to reach you… then you need some sort of contact form, and you’ll get spam on that form which is annoying.