"Please enter a valid email address" - are you getting this error while trying to create new Facebook account? This happens when there is problem with email ID (according to Facebook terms and conditions) being provided by you at the sign-up webpage. Since Facebook is for personal use,
View emails ‘to & from’ specific contact ID in Gmail
We tend to send and receive emails between number of email IDs or contacts. Do you want to view email messages sent or received from specific email ID contact in Gmail? You can easily do this by filtering emails from any email ID within your Gmail inbox using 'recent conversation'
View & save images, links, email ID from any website
We have already seen File2HD online service to quickly download files from any website. Xsite utility does similar without you having to open web browser. Just enter URL or website address and hit the enter key. You will get list of weblinks, images and email address associated with