link-o-rama.com picture height and width rule

[Ramster]

600 pixels is NOT enough in my opinion.

I do TGP galleries and not too many take that size there neither. You have to remember that surfers and technology has evolved. Not many surf at 800x600 anymore so larger size makes it better and honestly better for you on sales. The surfer sees a nice big picture rather than one that only covers 50% of his screen and it has a better chance of turning him on IMO.

I personally use 800 on the long side with all galleries.