When I went to change the settings of the plugin with WP-Debug turned on. I was given a full page of deprecated notices.
As much as I would like to use this plugin and I know that notices aren't the end of the world either. But the shear number of them that appears concerns me and makes me want to find other plugin that is using newer code.
Also a number of these notices were from WordPress 2.7 which was released in 2009. Where now into WP 3.3 and it's 2012.
Not sure when the notices would turn into warnings and then errors…
The above is just my opinion, but I don't want use something with so many notices from a version from so many years ago.