I would guess that groups.google.com is the most obvious choice, but 
here are GIANT lists of other options

http://www.dmoz.org/Computers/Usenet/Public_News_Servers/
http://www.dmoz.org/Computers/Usenet/Web_Based/
http://www.dmoz.org/Computers/Usenet/Feed_Services/

Cheers,
./brm


Skutt, Tim wrote:
> I've been known to use Groups.google.com
>
>
> -----Original Message-----
> From: MSU Network Administrators Group [mailto:[log in to unmask]] On
> Behalf Of David McFarlane
> Sent: Tuesday, October 02, 2007 10:04 AM
> To: [log in to unmask]
> Subject: Re: [MSUNAG] News.msu.edu Removal From Service
>
>   
> Pardon my ignorance, but could you provide examples of these readily
> available news browser services that I could use for Usenet?  Thanks.
>