ECommerce site - Duplicate pages problem.

[SarahCollins]

We have an eCommerce site with multiple products being displayed on a number of pages.

We use rel="next" and rel="prev" and have a display ALL which I understand Google should automatically be able to find.

1. Should we also being using a Canonical tag as well to tell google to give authority to the first page or the All Pages. Or was the use of the next and prev rel tags that we currently do adequate.

2. We currently display 20 products per page, we were thinking of increasing this to make fewer pages but they would be better as this which would make some later product pages redundant . If we add 301 redirects on the redundant pages, does anyone know of the sort of impact this might cause to traffic and seo ?.

General thoughts if anyone has similar problems welcome

[BenFox]

In answer to question 1 Google don't officially recommend so I wouldn't. (and I doubt anyone with evidence that there is added benefit from it would share the evidence.)

[Saijo.George]

With pagination if you have correctly implemented rel="next" and rel="prev" , you should be fine . But one issue I have seen with my clients is that , eCommerce sites usually have multiple ways to sort pages

• higest price
• lowest price
• a-z
• z-a
• etc

all these are duplicate content if you have not  used rel="Canonical" .  Hope this helps you out