I sent the same link to three Slack channels last Tuesday and realized I had zero way of knowing which one drove the 47 signups I saw that morning. Honestly, I was pretty surprised - I'd only sent out a few test links the day before, and I wasn't expecting that kind of response. Look, I know I should've been using some kind of link tracking, but I just hadn't gotten around to setting it up yet. Why Manual Tracking Failed Me I was trying to track link clicks manually, using a combination of Google Analytics and some custom JavaScript code to log clicks on my website. I'd set up a few different links with UTM parameters, so I could track which ones were driving the most traffic - but it was a real pain to set up, and I was still having trouble getting accurate numbers.…