I love DSL

but I have never written one :o( (apart the "internal DSL in XML or Java)

http://www.infoq.com/interviews/ghosh-dsls

Debashish Ghosh managed to stir my enthusiasm here: minute 02:38

in order to model a problem you need to think in the terms of the issues which come up in the domain

the solution model should be expressed in a language which offers you the best abstraction level


Debashish recommends Eclipse Xtext (looks BRILLIANT! just follow this link)