One of the pros of Blogger is that JavaScript is allowed, whereas for WordPress, JavaScript is not allowed for security reasons. JavaScript is a pretty cool add on to a website, it can do simple calculations.
I have written a JavaScript Applet to Guess Birthday Month based on First 4 NRIC Digits, at http://mathtuition88.blogspot.sg/2014/12/javascript-app-to-calculate-birthdate.html.
Do check it out if you are interested! (For fun only, it may not be 100% accurate).
The math theory is based on my earlier post at: Formula to guess Month of Birthday from Singapore NRIC.
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