hehehehhehe
it's just a character that is invisible in "advanced" controls (like webbrowser) but is visible in standard controls (like a textbox).
PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCO Yeah, its a real word (a lung disease caused by breathing in particles of siliceous volcanic dust.)
Type www.PNEUMONOULTRAMICROSCOPICSILICOVOLO.co.uk in a window and press enter smile.gif It goes all weird with differant characters and underlines here and there.
credits to TFO_Chaos from msn fanatic
edit :
look what happened