This is a very specific problem and I have two questions to ask regarding it.
Recently, it came to my attention that an outside affiliate was buying PPC search words for a term on Yahoo and Bing. However, when we checked that specific term in our Google Analytics it only shows up as an organic keyword and not as a paid keyword which it is.
To help better understand the whole situation, we do use URL tags with our affiliates but they aren't Google utm tags, they are custom in-house tags.
I have two questions in regards to this: First, I'm worried if other Bing and Yahoo paid traffic is being counted as organic traffic in GA. Does GA require extra tagging to distinguish non-Google paid and organic search traffic?
Second, to filter these results out from GA would I use a referral filter or a campaign target URL filter? Specifically, I'm trying to filter out just the visits based on the specific tag we have on the ad but I'm not sure which filter I need for that.