While I may know diddly about metal detecting I do know about web development. I noticed when posting to a string that may be 3 to 4 pages deep the string stays on that page. In other words a person with a potential answer to a question may never see that because most people stay on the first 2 pages. I am suggesting that old posts when answered or new information is added be brought to the first page. This will indeed bring new conversations and much more activity...just my 2 cents. I know this will work.