I don't think it happened to me, but then I don't venture outside Amazon, Newegg.. major sites that much. But even then.. if they need all those crazy redirects, maybe they don't want my business.
If you ever limit the number of redirects to one in Firefox by using about:config, you'll see that most sites do at least two per page. It makes me wonder how many useless portals there actually are just because people glue together CDNs and add more off-site frameworks like Akamai and Typekit.