link_to to open a website

Hello there,

     I am using the link_to tag to open a website. I am getting error.

I used the following code.

<%= link_to "click here",:action =>"" %>

I am getting the following error

No route matches "/users/" with

Can anybody tell me what i have to do to overcome this problem.

Thanks in advance.

<%= link_to “This should be easy if you RTFM.”, “” %>