Flikr

I have been intrigued by Flikr since a childhood friend of mine and I reconnected last year, and she pointed me to her photos on Flikr so I could see what she looked like now, see her dog and her husband, and generally catch up. I use a similar site called dotPhoto.com which has the added attraction of selling prints of any photo you'd like. Obviously you you can choose to print your own photos, but also (if you allow it) visitors can order their own copies. It is nice to be able to share photos from trips or get-togethers with the other participants!