Feel free to test this out in a comment below. Please keep images at 500x or less. All you really need is (no spaces) this code, just copy it and change the section in quotes/the address to use your own image:
If it is wider than 500 px (basically the width of the discussion text) use this instead: <img src="http://www.website.com/file.jpg" width="500px" />
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To get the URL of an image, it must be on a website first. Right click on it and choose "View Image". Then copy it's address out of the URL bar at the top of your browser. The link should end in .jpg, .gif, .png, which means it is a type of image. Or, right click on it and choose "View Image" or "Properties" and copy the link from the text in the dialog.
<img src="http://www.website.com/file.jpg" />
If it is wider than 500 px (basically the width of the discussion text) use this instead:
<img src="http://www.website.com/file.jpg" width="500px" />
...............................
To get the URL of an image, it must be on a website first. Right click on it and choose "View Image". Then copy it's address out of the URL bar at the top of your browser. The link should end in .jpg, .gif, .png, which means it is a type of image. Or, right click on it and choose "View Image" or "Properties" and copy the link from the text in the dialog.