I have been helping out on the project database adding thumbnails.
If there is no thumbnail for an entry, I have been going to the website for the project and picking an appropriate picture and putting it as the thumbnail.
Should we be contacting the authors of the websites for permission to use the artwork? Personally, so long as the thumbnail image is named correctly and saved in the right project's thumbnail, we should not have to get permission. But I don't want to run into any more artwork nazis.
CM