Remember when you post pictures that the page will take longer to display. This especially frustrating to those who are on dialup connections. It is better to upload the images and have only a thumbnail displayed in the post. Then other members have the option of viewing the full-size image at their leisure. Also, if you post a link to an image using a link that points to another site, that site could be shut down in the future. This would eliminate the image and make your post incomplete. Uploading your images means that they will forever be housed on RCUniverse. So, uploading an image is the preferred method since it improves the integrity of your post and display speed.