You can use it to find out what people are doing, where they're going or even how long their visit was for example! It's really helpful when you want know who came in your website that day (or week) but also if someone clicked something of interest from another page/domain - then this would be useful too!! The only thing I don't like about trisuil so far as its free version has some limitations compared with premium one; e g no reports customization etc.. Also sometimes i have problems accessing server logs due connection issues at my end-point firewall level.- If anyone needs an optionnal log analysis tool try using Splunk software instead because there isn´t any other open source product available right now! Free trial period works well enough before purchasing license!!