Once a web tracker is created, users are able to easily add additional data to associate with their customers when triggering this web tracker.
For example, if you want to add a tag to all users who visited your t-shirt webpage with the tag "T-Shirt Lead," you could configure the tracking link as following:
Now, save your tracker and add it to your page. Existing trackers will update automatically. There is no need to re-install. When a contact reaches the page with the new tracker, they'll automatically receive "T-Shirt Lead" tag just for visiting the page with this tracker on it.
Note that these trackers can be configured with variables, meaning that you can assign tags on the fly with the help of your web team. Choose "Tracker URL" for the Data Source, and then you'll be able to replace {{TAGS_ADD}} above with any type of tag you would like. If your website can find and replace {{TAGS_ADD}} with the Page Title, you can add one tracker to every page and have the visited page titles stored with each customer.