Hi Joe,
I am saying that please dont do anything with this kind of services. SEO is time consuming and slow process which gives you better ROI when doing with right process.
Perhaps it will give you early success, if you are lucky. But in future you have to face any kind of penalities and traffic drops.
And also doing directories manually is more advisable as you need to select powerful good directories and more relevant categories to your site.
Plus I've doubt that major good social bookmarking sites allowed automated software to place bookmark is their site.
I hope this will help you.
Thanks