yes, so it stands out
You can underline an email address by pressing Enter in many email applications. You can also underline it by highlighting it and selecting the underline function.
Most word processing programs (such as MS Word and WordPerfect) will automatically format a web or email address that is followed by a spacebar or enter key as a hyperlink. The programs will underline the links in blue to let you know they are hyperlinked.
On the web underlines usually mean that the text is a link. If your blog name doesn't link to anything then it's probably best not to underline it.
email address has an "at" symbol @ web address does not.
Http//web address
A web site address is the address of a web site page
Unfortunately there is no way to underline words online, unless the website supports it and provides an option for it. However if you are building a web site you may use the <u> and </u> tags.
The web address of friendster is www.friendster.com
The R.S.P.C.A web address is www.rspca.org.uk
a web address suffix.
An underline!An underline!An underline!An underline!