the topic title is wrong on so many levels
it's eye catchening, I don't know if he made it on purpose, but it actually works
25$ for 20k real human clicks, interesting
No matter how cheap it is untargeted traffic is about as much use as no one visiting the site
You're better off with a known service if you want to go down the paying to make it look like your site is popular route :
http://adf.ly/Also it only affects alexa rank if your traffic is running the alexa tool bar, last time I checked bots dont use browsers
