The idea with the tip-donate button is that it can be placed on pages and apps, such as on blog posts and videos. When a user clicks on the button for the first time, then say 0.1 safecoins are donated to the author/owner. If the user clicks on the same button again, then a dialog box is displayed with with quick buttons for 1, 10, 100 etc safecoins and an input field for arbitrary amount.
For the first click (0.1 safecoins) no dialog box displayed, and the button is used for easy tipping. For repeated click the dialog box is shown and in this way larger donations can be done with almost the same ease as with the one-click tipping.
Only the first click counts as a like/+1.