The network is now also open to all learners outside of universities. The network co-ordinator is Helmut Brammerts.
Adult learners can register on-site to be tandem partners and to be paired with suitable partners.
This website gives you the chance to get penpals from all over the world, so is useful for any language student. It also has an E-Mail vocabulary service, where it sends you a new word every day. There is also an online dictionary, translators and language courses plus other stuff.