Please do not add commercial links (or links to your own private websites) to Wikipedia. Wikipedia is not a vehicle for advertising or a mere collection of external links. You are, however, encouraged to add content instead of links to the encyclopedia. If you feel the link should be added to the article please discuss it on the article's talk page rather than re-adding it. See the welcome page to learn more about Wikipedia. Thanks. Petros471 18:06, 13 June 2006 (UTC)
External Links on Portland, Michigan edit
The links to http://www.historicbridges.org/ should probably be cited as the source for the section on Portland's historic bridges. I don't think acknowledging where the information came from would be considered spam. If you look around there are examples of doing this versus simply having an External link.