Some of us worked together a paper about what we see as the do's and don'ts of discourse analysis. It was published in Discourse Analysis Online (DAOL), an online journal. Here's the reference and a link:

Antaki, C., Billig, M., Edwards, D., and Potter, J., 2003, "Discourse Analysis Means Doing Analysis: A Critique Of Six Analytic Shortcomings", 1. Discourse Analysis Online. If you encounter access trouble at that site, here is a pdf version.

It has also been published in Spanish, on the website of the on-line journal Athenea, published by the Universitat Autonoma de Barcelona, at this address: [http://antalya.uab.es/athenea/index.html]