url link problems

i can post a url site on my post but when i try to name somethign else and i go to it, it says page cannot be displayed, why is this. ill put up the site to google for an example

http://www.google.com.au/
now ill try to customize the name of it

click hereSaL_92

It doesn't work because your HTML isn't proper.  Use this:

what you want to say

So your example would be typed like this:

click here