I needed to setup a project for Eclipse plug-ins at SourceForge.net. Like many other similar projects I'd like to deliver my releases via an Eclipse update site instead of ZIP downloads. My goal was to take the best of the SourceForge's file release system and mirror site infrastructure.
After a short googling I found out that this problem has a simple solution. Thanks to Michiel 'elmuerte' Hendriks for posting guidelines on his blog. They work like a charm.