You can block the HOSTS file unwanted web pages to be loaded in the browser.
Once the HOSTS file downloaded and in the correct position, it is very often forgotten and therefore never really cared.
For example, an old HOSTS file is of very little use to you. Some malware will delete or modify the HOSTS file. Recent examples include lines that were added, to be blocking your access to sensitive sites.
HOSTS File Manager main features:
What is new in the HOSTS file manager