Wow! Nice plugin. Though it has facility to add any bookmarking service from back-end, most of the user do not want to go through hassle of adding manually and repeating each action for adding new services. While this is possible for site admin, in network mode, each blog owner has to make a request to network administrator to add his own favorite service. This I still miss large number of services provided by “add to any” which I was using before finding this plugin.
It would be worthwhile to provide all services by default in back-end and giving user ability to select some of them. Logically all services cant be provided in the front-end as it would not look nice. However a “more services” link can be provided at the bottom of floating social , which on clicking would lead to popup (or something similar) containing all listed services and option to select one of them thus enhancing user services.
This would also save many user hours that would be lost for manually updating the list.