A new study by Optify has found that Google’s “not provided” category now disguises up to 40% of referring keywords to B2B sites. That’s a 171% increase since the service added the “not provided” category a year ago.More specifically, 64 percent of companies in the study see 30% – 50% of their traffic from Google as “not provided.”Optify believes that this trend will continue to grow until all keywords are undisclosed. Site owners will still be able to see organic search results in terms of numbers, but will have no ability to track what keywords were most effective.There are some work-arounds, however. If you’re using keywords to personalize pages, form submissions, page viewed and campaign tagging can be used as approximations. You can also use your PPC data to estimate the performance of keywords you are targeting or considering.But it’s best to harness the most you can from your keywords now. It’s likely you’re going to see even fewer in the future.