Blezywap Pls y did people use to put .html at the back of their link eg blessedwap.xtgem.com/how to add your site to google.html(need the reason

 Graham Blezywap .html is just to show that it is a html file. Really it is a throwback to the early days of the internet and does not do anything you could have index.banana
also
index.a will be seen as your homepage over index.z or just index