Sgt_Kickaxe - 4:31 am on Jun 18, 2011 (gmt 0)
What would you look at first to figure out why this is happening?
Interesting, here is what I would do.
#1 - Study the data. Break traffic data down by source for starters. "up 17%" doesn't mean much if it's up 50% from one source and down on others. Is your GOOGLE traffic up 17%?
possibilities - Google is sending you more traffic but has pre-filtered what they consider "likely to buy" visitors and sent them elsewhere by showing them personalized results.
#2 - Set up some tests - nothing beats A/B testing to find performance improvements. The trick here is to make small adjustments and allow enough time to pass before making assumptions.
#3 - Which pages is your traffic up on? Perhaps your old performers got a downgrade and your newer content moved up a little.
You'll have your hands full with just those for a while.