(1) These plugins are for hosts who have uploaded wordpress. They have ‘WP-Contents’ directory to
put the plugin there.
(2) When that is activated by the wordpress host
then you can get use of that plugin. Direct site
users can do nothing of that plugin in any folder
you download into.
(3) If you have wordpress hosted and downloaded
this plugin, use FTP program to connect to your
host and put the plugin in the ‘WP-Content/plugins/’
folder there from your ‘My Documents’ folder. If
you donot have any hosting account and wordpress
installation on web, just erase the plugin.