I like DropBox - IT HAS NO ADVERTISING when people view one of your photos - it is free until you use up the free storage space.
You place the images in the Public folder and the use the "publis" link to the photo.
Learn how to use a program that allows you to change/save images to a smaller size (like no wider than 1024 pixels) - I use Preview on a Mac (I forget what similar program is free for Windows).
