== Emphasize general approaches rather than specific techniques == 
 This article doesn't make the differences between the various different kinds of feature selection algorithm apparent. Wrapper and filter approaches differ only in their choice of evaluation metric, whereas embedded techniques cover a range of algorithms which are built into classification systems. The latter half also appears to have become a place for people to plug their pet technique. I think someone should expand the general sections and move the various different kinds to separate pages and link to them. (I can do this if nobody else wants to).