The discussion revolves around a photo contest themed "Peace and Tranquility," where participants are required to submit digital photos that evoke a sense of calm. Contest rules specify that submissions must be original, resized to specific dimensions (no more than 650 x 490 or 490 x 650 pixels), and uploaded to image hosting sites like ImageShack. Participants can only submit one photo each, and modifications are limited to brightness and contrast adjustments. The thread also addresses common issues with image sizing and offers tips for resizing photos using various methods, including software like Paint and online tools. Several members share their experiences and challenges with the contest, including humorous anecdotes about their photo submissions. The conversation highlights the importance of adhering to the contest rules while fostering a sense of community among participants.