http://tinypic.com is great if you just want quick links to pix.

I started using http://www.photobucket.com when it first started. It was free and I had unlimited bandwidth. Then more and more people started using it and pretty soon pictures weren't showing up if you didn't pay. Because I had hundreds of photos already uploaded that I use for MySpace and LJ, I ended up giving in and paying $25/year. I figured it's not too much as long as my pix keep loading.