Today I signed up for a Pro account, so I’ve been in the process of uploading a bunch of photos. If you have a Yahoo account you can begin using Flickr right away. If not, you’ll have to sign up for a Yahoo account.
And if you use iPhoto like most Mac users do, check out FlickrExport. It’s a plug-in for iPhoto that enables you to upload directly from iPhoto, tag photos, create new photosets, and set privacy settings.
I’m not sure how much of my family and friends will use Flickr, but if they sign up for it they can see my photos.