Click the "Images" tab in Auctiva, then select "Manage Images". Find the image that you want to edit, then check the appropriate selection box. Select "Edit", then "Crop".
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .