There's a lot of info at that site. Here is the main text message:

Dear Internet Radio Listener:

Thank you for taking a moment to preserve your access to the kind of Internet radio that you find at Web-Radio and all over the Net. Today thousands of stations broadcast online. But Internet Radio is in real Jeopardy of being silenced forever.   

Recently the Copyright Arbitration Royalty Panel (CARP) that was appointed by the U.S. Government Copyright Office, at the prompting of the Recording Industry Association of America (RIAA), recommended new and burdensome royalty payments on Internet radio broadcasters. These royalties do not apply to traditional broadcasters of AM and FM radio, so they represent a direct attempt by the RIAA to drive Internet radio out of business. For some reason, they believe that Internet radio is a threat to CD sales, even though they also believe that broadcast radio represents free advertising.

You can read more about this ruling, issued by the Copyright Arbitration Royalty Panel (CARP) at www.saveinternetradio.org .

These royalty costs far exceed the actual income of most Internet radio station, let alone any profit. They are also retroactive to 1998. This means that most stations are facing massive "past due" bills for everything they have ever played to listeners like you in the last four years. In simple terms, this misguided ruling by the panel will bankrupt most Internet radio stations. At best, a few deep-pocket corporations will continue to serve music over the Internet. Since these few corporations will dominate the market, the variety you have come to love will disappear.

There is still hope. The CARP ruling is being appealed. You can influence this process by sending a fax or email to your congressman and your senator, but you must do so today. The CARP ruling will soon be finalized in May and then it will be too late.

Please help Internet Radio stay in business, so that they can continue to serve you to years to come !

Sincerely,

Web-Radio.FM