In poor style...
The fact that it was not clearly marked that the longest line is not available on newgrounds.
I have no problems with games encouraging visiting one site or another in the way you just did. Problematic is the fact, that it wasn't marked in a clear and visible way. Only midgame I realized that playing from 'bored' is required to get every item.
And since games like this have little replay value... I stopped playing altogether.