Marketing of Search Engine - URL's From Hell - They live. The parameters and session IDs that Dynamic shopping and e-commerce sites uses, are tend to create this quite nicely. You are reducing your hope for search engine success, if your website has URL's riddled with percent signs, question marks, Session ID's, and at least 3 Parameters. Don't be jealous, if your URL's aren't as long as they could be. For this, fake parameters can be added to the end of the real URL as you like it.