Please note: I have no involvement in SPEWS. I publish this information simply to be helpful to people I see trying to figure out what to do about a SPEWS listing.
SPEWS is clearly dead/abandoned. SPEWS data has not been updated since Wednesday, August 23, 2006 11:03:29 PM.
If you'd like to confirm this for yourself, I explain how to do that here.
I confirmed with other smart anti-spam folks to ensure that I am checking this properly, and I’m pretty sure it’s correct.
Update as of Thursday, February 1, 2007: Matthew Sullivan of SORBS has emptied out the SPEWS data he was previously serving via his nameservers. Read more >>
If you are listed on SPEWS, don't despair. I've compiled some tips on how to deal with the situation. Click here to read on.