is it possible to showing successful message after sharing ?

ShareThis button shows the Success message after sharing.
But when somebody clicks on the Share button, a count call has been initiated and the count on the buttons increases at the same moment, it is the basic functionality of the ShareThis buttons. Here, the user has an intent of sharing the data and hence he has clicked the button, but if he cancels the sharing, the counter never goes back as the count call which is initiated earlier has already being tracked by the Analytics Dashboard.
Hope this helps.