Great Implementation
There are a lot of screengrab tools out there but most of them are over thought and over wrought. Annotate has all the options you need, implmented in ways that make perfect sense and which are therefore easy to remember the next time you need them. Anything Ive wished for (fine tune the Dropbox URL placed on the clipboard, remove Facebook from the sharing list) are right there in the Preferences. Tipothehat to the app creator!
Bozo Clown about Annotate - Capture and Share