[twitter-dev] Twitter site URL hijacks my sharepoint portal page

[Hemanth]

I have a sharepoint portal page with few web parts. One of these web
parts is a sharepoint page viewer web part.  When I configure the page
viewer web part with the URL www.twitter.com and click on OK button,
my portal page is hijacked and redirected to twitter home page.  I am
not able to open and edit my portal page now.  As soon as I open my
portal page in IE, it redirects to twitter page. I am using IE 8.