How is a Flickr Gallery Different than Favorites, Sets and Collections?

Flickr is not a cloud storage service. It is a photo-sharing website where you can capture photos and videos to share with others. It allows you to organize photos into 'Albums' which is also known as 'Sets' and 'Albums' are organized into 'Collections'. 'Collections' are just groups of sets. Flickr allows you to put several sets together into one group. Flickr 'Favorites' are ongoing stream of photos which you like. Favorites are an easy way to mark a photo that you like. You can also create Galleries in your Flickr account. You can bring up to 50 photos or videos in one Gallery. To create a Gallery, go to a photo or video which you want to add. Click 'Add to a Gallery' link located in the More menu. This is how you can create a new gallery or add the photo to an existing one.

You can install PicBackMan's Flickr uploader for Mac from the website and start backing up photos and videos.

Quick Tip to Keep your Photos Safe
Making backups of your photos & videos is a chore you probably skip, but it really doesn't have to be hard. Here's an effortless way to backup photos - PicBackMan. PicBackMan is the easiest and simplest way to keep your photos safely backed up in one or more online accounts. Simply download PicBackMan (it's free!), register your account, connect to your online store and tell PicBackMan where your photos are - PicBackMan does the rest, automatically. It bulk uploads all photos and keeps looking for new ones and uploads those too. You don't have to ever touch it.