Because the URL uses http (unsecured) and obfuscated filenames ( indexs.php ), the data transmitted is not verified. These sites are notorious for "Drive-by Downloads," where simply loading the page can attempt to install malware on your device.
for streaming TV/movies (legal, safe):
Access to international channels that standard providers don't offer. Portability: The ability to watch on any device, anywhere. http webbudtvultracom indexsphp better
In the context of illicit streaming portals, the string better appended to the PHP file usually serves one of two functions: Because the URL uses http (unsecured) and obfuscated