Thanks for that. Hmmm I only need the shortcode for one entry in a sidebar so I'll have to see about the amount of work need to implement it. (it's wrapped in other code)
As a sub note Subscribers Text Counter http://wordpress.org/extend/plugins/subscribers-text-counter/ Has short codes that allows for social numbers to appear in side bars. The only problem with this plugin is that it's not been updated in a while, doesn't have some of the options yours has, and causes some conflicts if there's a break in the API.
It would be very good is you plugin widget would allow for some additional text as well. As it choose the social next works to add, then a field under it allowing you to add addition text/code. This is where on could put in that short code.
Anyway, those are just ideas. It's still a good plugin and more importantly, stable!!