Really good but the default shortcut for sharing (Ctrl+Shift+S) interferes with the shortcut for Firefox Screenshots which is also "Ctrl+Shift+S", if you use that to take screenshots easily on firefox you wont be able to take screenshots after installing AddToAny, the addon is good but the quality of life Firefox Screenshots brings is higher than what AddToAny offers, if this is fixed I will reinstall AddToAny but until then Im afraid i have to uninstall it.
Thanks for your feedback on the default keyboard shortcut. You can customize your extension shortcuts (including Screenshot) in Firefox's Manage Extension Shortcuts: https://support.mozilla.org/en-US/kb/manage-extension-shortcuts-firefox
