How to get rid of dropbox
I have dropbox on my iMac and I want to get rid of it. I'm sick of getting messages saying that I need to buy more space. I have tried to drag it to the trash from Finder but I get a message that I can't delete it because it is open. I can't find a way to close it. Can anybody help?
iMac (27-inch, Late 2013), Mac OS X (10.7.5)