Go to google.com and write first one word and then another.  (If the search tems would be:

N800  Maemo

Then Maemo word would replace N800 from search box.)

One can also try to sign in to gmail account with long account name. My email address starts with my surname (that is 10 letters long) then comes dot and then my first name if email address is so long that it continues to start of touch thing  (the thing one writes on stylus and the text goes gray after maximum width is achieved)  the whole account name is erased.

Also if predictive word thing from below  is on and predicts what one is trying to write (for example my surname) and that is then used (another words; is pressed) everything will be erased before the end of email address.