VoiceThread

Voicethread.com is a free service enabling you to create a series of photos and add your lovely voice as a comment to each picture.

I just tried it and it's fairly easy to use.

It's different from slidecasts at Slideshare.net in that you don't have to upload an entire PowerPoint presentation. Instead, you can batch upload a series of photos, and then use your voice to comment on each photo.

If you're an entrepreneur or a free agent, this is a good way to create a "voice-enabled" brochure. Voice adds a unique human element that text simply cannot convey, so this might complement your website or blog.