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I have lots of paginated pages which are being indexed. Should I add the noindex tag to page 2 onwards?

The pages currently have previous and next tags in place. Page one also has a self-referencing canonical.

Thanks David. Moz pro isn't showing any changes in search visibility. And yes, Google gains are outweighing Bing/Yahoo losses. So I suppose people might be moving. This article says that they're not: http://gs.statcounter.com/search-engine-market-share/all/united-kingdom but perhaps my audience is.

Data is only available for past 6 months so that doesn't help me

Traffic to my three sites from Bing and Yahoo has been declining over the past year. Meanwhile traffic from Google has been increasing.

A year ago Bing and Yahoo brought in 34% of my traffic. Now it's only 19%.

What can I do to optimise specifically for Bing/Yahoo? I have Webmaster tools. Or could it be that my customers (largely aged 60+) are moving over to Google?

Thanks