Apart from hosting them on a webpage where an admin has to manage them, let's just get Dropbox.
It's 2gb online storage for free, we share out one folder between the lot of us, and put all our maps in there. If I put a map in there, it shows up one EVERYONE's computer running dropbox, in that very same folder, in seconds. Really, Really cool.
Here's my collection of maps: Dropbox - PC3 maps
Plus, anything you put in the folder is automatically synchronized to any other computer you have dropbox on, or with other people that you share with (only the shared folders synchronize to others, you can still keep the rest of your content secure). Bigdaa, we don't want your kitty porn stash.
Oh, and any folders of pictures you put under the Photos folder can be shared like an online album, like pics of my bike here: Dropbox - Photos - 919 with 900rr header
It's actually a really cool utility. Osiris' and I use it to share photos back and forth and we have a copy of the service manual in there as well.
Check it out. https://www.dropbox.com/sh/ra9j3gn4c...qU3ZOL4JuwuBKa
Oh, and you can get more than 2gb by referring people as well, like I've done in the link above... You don't have to refer people, but it's nice to get a little more space for free. So feel free to sign up.