After Skitch was acquired by Evernote, the 2.0 update of the screenshot app received flak for removing a lot of useful features. Version 1.0 holdouts eventually found that the button to copy the URL of an uploaded image was broken, along with other issues in the older version.
Thanks in part to the backlash, Evernote has released a Skitch update that starts to bring back these older features. These include the return of custom styles and colors, an option to auto copy the URL once an image has been uploaded, an overhauled sharing interface with a plethora of sharing options (yay FTP/sFTP!) and more. There's also a timed snapshot option for doing screencaps via keyboard shortcut or drop-down menu.