This is a place to share pictures of your sims' lots. While "i.d." is an abbreviation for "interior design", feel free to post pictures of landscaping, scenery, or anything pretty about your sims' surroundings.
Not many. Just use your common sense. Keep your pictures reasonably sized (700x450ish) and if you have more than one picture, only one should appear outside a cut. Be respectful. You don't have to luuurve everything everyone posts, but don't be a douche.