If you have forms on public web pages, you’re bound to get some spam. Spam form entries are a frustrating part of collecting leads, growing an email list, and giving people opportunities to contact you.
Why is spam so common? Because spammers set up spambots. These are automated scripts that troll the web, mostly for web links.
Why do people spam forms? For backlinks, mostly. What’s that? Google will boost a website’s rankings if it has a lot of links, so less-than-honest marketers create these bots that spam your forms with those random links you see in those forms. If any of those links show up on a website, their site’s ranking improves. So they are hoping someone won’t be paying attention, and their links perform higher in web rankings. But does this work? Seems easy, build a bot and send it on its way. Wouldn’t that be great and easy…this method of “marketing” isn’t as effective as it used to be, as, throughout the years, Google has gotten smarter.
In the worst cases, some bots will use your form to inject malicious code into your website. These bots could damage your pages or databases, harvest sensitive information, or even disable your site entirely. Needless to say, it’s important to stop spam form entries however you can.