With Popmundo 2.0 coming, the skills mastery will soon be displayed by five stars instead of ten.
That's why Popmundo devs have tweaked the prerequesites: now you've to get two, four or six stars instead of one, three or five. The Bible has been updated too.
If somehow you'd like to help the author to pay the web hosting of the Popmundo Bible and/or showing him some gratitude for the hundreds of hours spent on coding this little place of happiness, you can donate a few cents. For the second option, you can skip this and just send him some kind words on Popmundo :)