I had the same problem awhile back I added an external links section with the IMPDB and it was undone immediately thereafter under the external links rules but I feel thats a complete misinterpretation of the guidelines The rule or rules if you include both  and  isare intended to keep things clean by not linking to pathetic wikis with lotsa vandalism andor blatant spam The IMPDB is neither having been fairly stable well organized and growing at a considerable rate several articles per week Its still new but based on the firearms database and quite well done A link to the planes database is really no different than all the many links to Wookiepedia Memory Alpha and the Muppet wiki among others albeit on a smaller scale Continually denying this external link simply prevents this article from having a solid external resource and I would add is a bit hypocritical Anything goes here but lets not direct readers to a well done site