hello!!! i like this forum)))
Hi,
I think you forgot one letter in the topic’s title 
Have you actually looked in gplay for “Hello World” Apps - there are plenty!! facepalm …
oh, and hi there I just wanted to say, you may missed a letter in your heading :-p
hello world has been replaced with flappy bird for android game development
looks like he does not care for missing character L. he just cares about “hello”
Hello …
could also be an automated message by an bot doing some irrelevant posts to raise post count. We will see if this one spams in some days 
Yes, if the title were “Hello World”, it would seem like WP.