What would be the best pixel ratio for forum pictures?

[Pogue-Mahone]

Most of the time I try to make a picture to put in a forum post it goes outside of the boundaries of the post. I've remedied this by continually shrinking the proportions of the picture until it doesn't freak out the page, so I end up making three extra pictures.

Is there a preferred pixel ratio for the forum posts? I've looked around and there are multiple "preferred" sizes that come from multiple websites. I'd like to get the specifics for VGFacts so I could just make a template and work with that without having to worry about continually re-sizing my pictures.

What's the preferred pixel ratio for the VGFacts Forums?

[Pogue-Mahone]

I did some testing. It looks like something with a width from 650-700 pixels fits inside without breaking through the right side of the screen.

700x266


650x247


And the basic 6x4 inch picture (1800x1200 pixels) scaled down would be:

700x467