My belief is that you should never post a picture of the actual cache. Could possibly ruin the hunt for other cachers that have yet to find it. I have found some out there that if I had seen a picture of it first, would not have made the hunt very fun! On that note, I have found a few caches that actually said to take a picture with it and post. So unless it is stated in the info, I would refrain from taking a picture of the actual cache. Now if you are doing this for your own personal records, then why not. Just don't post online with your "found" remarks. Just my two cents on the idea!
The Holmestead