Z 4 z 5 gwězdkow pógódnośony

wót knoa.jp dnja Julij 15, 2011 · trajny wótkaz

It sometimes be confused by multibyte characters in Japanese sentences.
Test case: http://knoa.jp/up/linkification.txt

**reply @Ral of July 23, 2011**
Yes. It seems to detect email by blacklist of separator like spaces or quotes("). But It can't detect in Japanese or some other language sentences by blacklist. It should detect email by whitelist regex like [a-zA-Z\.\_\-]@..., I think.