Landing pages: 301 or not?

Question

We have a bunch of landingpages: http://ourdomain/landingpage. Each landingpage is unique in terms of title, texts, metatags, ... We mostly use these landingpages for adwords traffic, but also for offsite SEO links and banner campaigns.

Today when a user enters a landingpage, a cookie (session variable) is set and then the user is 301 redirected to http://ourdomain where the "landingpage" is generated.

My question is if this is the best way in terms of SEO? Should I skip the 301 and build PR for each landingpage or build PR for my domain?

Note that each landingpage has their own set of keywords (different product categories).

Answer 1

If each landing page can be somewhat associated to an existing page, I would suggest to skip the redirect and go with a canonical link tag.