According to the market place https://www.blackhatworld.com/seo/marketplace-rules-how-to-post-updated-no-sales-thread-bumping.387929/, we're supposed to be uploading images to either Imgur or Imageshack.us. However, you may have noticed that Imgur started compressing images and even converting to PNGs to JPEGs recently, making them look horrible. ImageShack, on the other hand, has a "free 30-day trial" whatever that means (I assume you would need to pay to keep any hosted images up after the 30 days) and I don't think many of us would be interested in paying for image hosting. It would be nice if the approved list of image hosting sites could be extended to about a dozen sites or so, or perhaps another solution? This will give provide more options to those of us concerned about the quality of their sales threads, since we currently don't have much of a choice.