The search function works great, you just have to know how to use it properly! When using the search bar, do it from within the forum that you wish to search. Searching from the forum homepage will look through every forum, but searching from inside the Shipping forum, for example, only pulls up results from the Shipping section. You can do the same inside any thread as well - the search bar searches the area of the site that you are active in, whether that's the main area, a sub-forum, or an individual thread. Libertas