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Traffic from mobile devices has grown tremendously over the last year, but the quality of that traffic may be sketchy.

In paid search, metrics often vary in unexpected ways. Unexplained variation is often referred to as “noise.” Noise occurs on top of, and can sometimes cloud our view of, the true underlying pattern, or, the “signal.”

Has eBay been phasing out syndicated Yahoo ads in favor of Google’s? RKG records indicate a major change in the search partner landscape.

The Rimm-Kaufman Group has once again been named to Inc. Magazine’s list of the Fastest Growing Private Companies in America.

Here are some aggregate charts of our clients’ results in the fourth quarter of 2008 vs. 2007.

One day isn’t an entire retail season, but I thought it interesting to compare CyberMonday 2008 to 2007.

The Rimm-Kaufman Group manages paid search for a great many retailers across just about every vertical and the October pain was felt by all of them. We know that the stakes are incredibly high going into this holiday in particular, placing a premium on getting the details right. Here are some tips to help out.

Yesterday Google announced SearchWiki, allowing Google users to customize their search results.

Final batch of most popular RKG paid search links, based on Feedburner readership stats.

As we approach our 800th post, we decided to highlight some of our most popular posts.

Proper attribution is critically important, and we recommend revisiting your cookie windows periodically to make sure you’re in the right neighborhood. Too long and you’re liable to waste money by over advertising, too short and you may miss opportunities.

As November begins, the situation has become bleaker.

“We’ll allow an ad that meets the quality threshold to appear above the search results even if it has to jump over other ads to do so. “

J. Crew responds to the Tonight Show.

The Buying Cycle is used by some as an excuse for overspending on general keywords. It’s a lovely theory, but we thought it was high time to take another look at whether the data supports it.

Helpful or harmful to users and advertisers?

Irrational over-bidding helps none of us, except Google.

Considering the perspective of paid search advertising, how should online advertisers be responding to the crisis on Wall Street?

Happy with your position crawling bid system? Find out why it is undoubtedly leaving money on the table.

Could wide-spread adoption geo-targeted advertising spell doom for online marketers? If brick and mortar stores start channeling resources towards local search, might “national” advertisers be outbid to the point of extinction?

Branding and Direct Marketing are different beasts, for sure. But aren’t they both geared towards generating ROI in the long run?

We do not observe broad weakness in online sales.

Google released their Quality Score Changes early last week. Based on early results, we’re seeing minimal effects.

If you’ll be at SMX East October 6-8, we’d love to meet up at the show.

Here’s a three minute video with some advice on how aggressively to bid in paid search.