I have the same response to the plugin as the author's module; it's easy to use and install, but you have minimal control over the placement and display. I need to be able to specify sections and categories. Hopefully down the road we'll see this become more robust.

This is simple to install and use but lacks customization; you can select module placement and which social networks to include but can't change the presentation or "Smart BookMarker" text.

I installed the extension with no problems but had one bug with the template I was using. I emailed the author and he worked on it over the weekend, then sent me a fix. Fantastic extension and great support; he really cares that it works for your needs.