Mypcbackup makes it super easy to share your folders.
First login to your control panel, http://my.Mypcbackup.com and locate the file or folder you want to share. Once you have found it, hover over it with your mouse and an option will appear called 'Share'
Here you will be able to share files with other Mypcbackup users via email or by clicking 'Public Link' you can generate a link and give it to anyone to access the file or folder.
Clicking Share will initially show options to share privately, here you can enter your friends email address and a personal message. Upon inviting them to share the file or folder they receive an email inviting them to either set up an account, or with a link to login and accept the share if they already have a Mypcbackup account. Last Update: 02/13/2014
Mypcbackup is currently working on bringing this feature to it's customers.
Currently within the Control Panel there are options to either share entire folders or single files. Last Update: 02/20/2013
Unfortunately Mypcbackup can not re-invite you to join the folder. You will have to contact the owner of the folder and request a new invitation to be sent. Last Update: 02/20/2013
Once logged into the control panel http://my.Mypcbackup.com and viewing backed up files you will notice two display options in the top-right of the window. One option, list view, is the default view. However, there is also a thumbnail view - this will display thumbnails of image files - if you click on an image in this view you are taken to a gallery view of the image and can cycle through all the images in that folder. Last Update: 02/13/2014