Adding photos to Comments:
Place the URL to the image into the comment like so:
<img src="URLHERE">
To upload photos to your profile:
Click on My Stuff or Artist (in the top navigation bar) and select Upload Photos under Media
Click Upload Photos (to upload an existing picture), Upload by email or Upload via Webcam
Select an existing album for the images or create a new album
Follow the prompts to add tags, date, location and captions
You can also use advanced editing features, update your profile, and more from this page