Huseyin! This is an awesome plugin! I LOVE how customizable it is!
But do you know what would bring it to a whole new level? ... Adding a Stat Tag "Display total shares" !!!!!
Someone has already created a new plugin called "Share Pulse" that has successfully integrated the combined Share API data of FaceBook, Twitter & Digg. Unfortunately it isn't at all as customizable as yours, takes up way too much real estate, has too many share icons (too repetitive) and isn't even multi widgeted to allow for different timeframes.
You already have the perfect foundation for adding probably what will be one of your plugin's most appealing features which already weaves in nicely with your plugin's name. People want to know what posts are being shared most, in an organized way. Integrating Shared API data into a "Display Total Shares" Stat Tag would do the trick and make your plugin shine above all others.
Also, a "3.0.1 bug note"... the Post Title's overflow text wraps around to UNDER the thumbnail. Can you make it stay within the text area... and also make Stat Tag info appear directly under the Post Title (justified left). It would look so much better.
Thanks for considering my thoughts!