Average Time Spent by visitors on the site depends on type of sites ( Blogs, Forums, Shopping Site, …). But, over period of time one can recognize the pattern establish a pattern and data will speak for itself.
In one of my blog, Average Time on site was around 3 Minutes, but I started testing Adsense Link Units in various places and found a placement ( color and size) where visitors tend to click the links many times.
After testing the link unit at new placements for 2 months, Average Time on Site decreased from 3 Minutes to 2 Minutes and 50 Seconds. It was interesting to see that single Link Unit can lower the Average Time on Site by 30 seconds.
Last 5 days, after removing the link unit, Average Time on Site increased to 3 Minutes and 15 Seconds. That has impact on revenue, but increase of 45 seconds is huge.
For now, 45 seconds is much more valuable than revenue generated from the adsense link unit.
Next – I’m going to explore ow to maintain/increase Average Time on Site with link units ( or other ad units) present.
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