This is certainly something I will be trying to set up. Is there a standard methodology for looking at the data gathered or is it simply looking for which gets the biggest numbers of visits and then conversions?
There's a URL builder tool on Google which let's you input the campaign and other details, so there's a lot of flex. But, the baseline source & medium really don't change - email is always email, referral is just that, then the site name for the specific source.'
But, you're not going to know in advance how successful a campaign might be. We found training courses being purchases from archived email links that people filed away until later in the year, when their continuing professional development annual credits were due, and suddenly started finding them clicking and buying. The emails had tagged links in them so that even a year later, we could see that it was the March 2012 Content Issue and that the link of interest to them had to do with training courses
in Miami in December.
Tag them all. Banners, text ads, link swaps, every time is the right time to add that tracking code on the end.
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HubSpot has come a long way from the 'inbound for dummies' they were post-launch. They're pretty affordable and have some utilities for quickly making call to actions / lead capture forms, then automagically create the tracking code and apply it.
The lead nurturing automation is pretty slick and is definitely usable. When you figure out how much time it saves vs proactively sending out email campaigns to an ever increasing pool of prospects, most marketing directors seem to rate an automation tool as being the equivalent of one full time marketing/sales rep, minimum, which isn't bad for a low end price of about £100 per month.
Segmentation, after you get beyond the source and medium, typically is based on campaigns which can then further be broken down by date, demographic, or whatever taxonomy makes sense (represents who you are targeting). With several layers, the performance can be examined in excrutiating detail or glanced at high level, all with relative ease.
Cheers!