I also dabbled with posting photos to a free hosting service. However, I had to create the interface for viewing the photos, and the process was somewhat cumbersome and time consuming. Each time I decided to add a photo, I had to recreate and upload the entire photo album: photos, pages, thumbnails, and all.
Then, Ofoto recently informed me via e-mail that unless I purchased a print from them, they would shut down my account and delete my photos on September 30.
Bye bye, Ofoto.
I then came across Flickr, a promising new service that combines photo sharing abilities with other social networking type features. So, I've moved the photos that were on Ofoto to Flickr.
I find it's best to use the "next in set" and "prev in set" picture buttons on the right hand side to navigate, as that will take you through the pictures in the order that I've specified. The forward and backward buttons above the photo take you through the pictures in the order I've uploaded them in Flickr (what they call my "Photostream"), which may or may not be in any sort of logical order.
Let me know if you like using Flickr, there are some things I really like about it (like a cool slideshow feature), and some things that I find confusing (like the above mentioned navigation).