the usage of non-English characters like ë, í, á, etc.

I wonder why people use them in words like nevër, particularly in articles delivered in emails. Is is some kind of strategy to fool automated tools (spam filters, duplicate content filters) making them believe the text is not in English or not the same as in the other email or what?

 

If they're being used in spam, yes, they're an attempt to get past spam filters.

If it's in a normal e-mail, it may be possible that they were using a non-qwerty keyboard with those characters on the keyboard.

 

If the person is pasting the text/article from WORD, that can be a cause.

 

I hate when that happens. Spammers also try to fool filters using spaces or periods but I guess most filters catch that already.

I hope filters won't start blocking accented characters, it would be terrible for people writing in Spanish, French or other languages that need special characters.

 

Spam: They use it to fool the Spam Blockers and get past them
Normally: People use it to look different and sound all cool and stuff.

IT

 

You can use encoding UTF-8 for these non-English characters.

 

They use it because it's correct. I would never write an article and spell naïve as naive. I would never spell vis-à-vis as visavi.