sending html link in SMS message in iPhone

I want to send SMS from iPhone to another phone with some text and a link. I can send it as text:

"Please click http://www.facebook.com to login to Facebook".

but I want to send it like it:

"Please click <a href="http://www.facebook.com">HERE</a> to login to Facebook".

Is this possible? How can I do it? Thanks!

SMS doesn't support anything but plain text AFAIK, so what you want to achieve isn't possible using SMS. On the other hand, I believe that MMS does support HTML, so you may want to try that instead.