Nice plugin! I've been searching for an elegant solution that allows for customized icons.
I've been getting the following notices in wp-admin and blog posts - referencing the "simple-share-buttons-adder.php" file. Not sure what might be causing them. The simplified outputs are below:
WP Admin Notices:
ssba_cats_archs (line 171)
ssba_homepage (line 172)
ssba_diggit in (line 179)
ssba_stumbleupon (line 181)
ssba_pinterest (line 182)
Blog Post Notices:
Use of undefined constant Y - assumed 'Y' (lines 394, 418, 442, 466, 490, 514, 538)
Also, curious if a few additional features could be added to future versions:
1a) addition of css classes to each button (to enable more customization via css styling)
1b) option to disable built-in css styles
2) additional options for positioning outside the content box (not sure if this possible without knowing specific theme structure).
Keep up the great work!