You can share songs, text, links, news stories, pictures, and even video to your activity stream quickly and easily from anywhere on the web whenever you see the Share on Myspace icon.
To use Share on Myspace, look for the Share on Myspace icon button on websites you are visiting. You can also use the Share on Myspace button as a bookmarklet in your browser for easy reference.
Is it possible to select the image or video thumbnail that will appear on my activity stream?
When you use Share on Myspace, a preview window appears to show you what will be shared on your stream. You can also choose to share on Facebook, Twitter, and Digg. You can add comments, an image description, and select from the images available from the site you're sharing by clicking on the left or right arrows under the image. When you find the image you like, click Share! You can even hide the image by clicking the checkbox for No Image.