They say it fits within the AdSense TOS but you need to ask permission from them to use it first.
It’s quite interesting to see the top three charts side by side. While unique visitors doesn’t go up and down too much there is some correlation between daily word count (posting frequency related) and AdSense earnings. There’s also probably some significant correlation between the day of the week and earnings also.
I guess the question a blogger would want to ask themselves before using sparklines is why they want to post the information on their blog. I don’t have a problem with those that do but I’m not sure it’d fit within my own blogging goals at this point. It’s definitely got a ‘cool factor’ though that I’m sure many will love.
Thanks to Jeremy for the email tip off.
