It's typical of Singlish speakers, and Malaysians are also notorious for adding "lah" at the end of a sentence. It's like a little verbal exclamation mark. For example, the Singlish "he was a crazy guy la" would be written in standard English as "He was a (really) crazy guy!"

This is the "Singlish",the same as "啦"。 It still has "ah","len","lor","hah","lar"... For example: can ah? can lah! can leh. can lor. can hah?

well...that's not English,it's Singlish...you know,75% people in that country are Chinese and Chinese offsprings..so it's normal to find some Chinese expressions in their English

I've never heard it used like this, but I got this definition from Webster's dictionary. It is an interjection. chiefly dialect —used for emphasis or expressing surprise http://www.merriam-webster.com/dictionary/la

I feel sorry to tell that is no English at all. The writer of that article is using the interjection "啦"(with pronunciation "la") in Chinese only. That is simply mistakes. Such king of English with embedding Chinese interjection is extremely common in Singapore and you can find it easily in films from Singapore. However, the other countries that with Chinese users seldom have such kind of English expression. He is probably not writing a serious publishing.