Sourcery and repository.slacky.eu

[zAchAry]

I can't add http://repository.slacky.eu/slackware-13.37/ to Sourcery.
I'm getting this error when trying to update the cache list:

There was an error while updating the SlackBuild
cache. Make sure you have configured all sources
properly and that you have a working internet
connection.

[gapan]

Of course you can't. It's not a slackbuild repository.