How to install Gedit plugins
Follow @ggarronA friend of the page was having some troubles at installing gedit plugings.
I will now show with an example how to do it.
First thing, of course you need gedit installed on your system.
Then download the plugin, in this case I will use for this example the smart highlight plugin.
It can be downloaded from: Google code
Once downloaded unpack it and then create this directory if it does not exists yet.
~/.gnome2/gedit/plugins/
you can do it with:
mkdir -p ~/.gnome2/gedit/plugins/
Then copy the [something].gedit-plugin in that directory, in this case, it is the file.
smart_highlight.gedit-plugin
and finally the folder with the rest of files also to the same folder. In this case, the folder smart_highlight to the ~/.gnome2/gedit/plugins/
All you need to do now is:
Open gedit, and enable the plugin like in this image:

Finally restart gedit, and you are done.

Finally, if you want your plugin system available, instead of installing it in ~/.gnome2/gedit/plugins/ do it in /usr/lib/gedit-2/plugins/
provided that you have root access.
As this is only to show how to install any plugin, I did not use the install.sh that comes with this plugin, and others may not offer, but that is of course the best way to proceed.