An online tribute is a memorial to someone created on an online memorial website. There are many online memorial websites available. And typically it involves entering details about a loved one and 'designing' a webpage that celebrates their life. They publishing the webpage and inviting friends and relatives to visit the page post messages about the person and leave gifts. Some online tributes (such as those here at Friends At Rest) allow you to be emailed whenever somebody contributes to a memorial to allow you take comfort from the support provided by your online tribute.
Online memorials help to cope with bereavement and also provide a place to visit your loved one at any time day or night and from anywhere in the world.