ICTs) are reshaping many industries, often by reshaping how information is shared. Informationintensive industries, by their nature, show the greatest impacts due to ICTs that enable information sharing and the bypassing of traditional information intermediaries. However, while the effects and uses of ICT are often associated with organizations (and industries), their use occurs at the individual level. In other words, it is changes to individual work related to the use of ICTs that reshape both organization and industry structures, and vice versa. To explore the relationships between individual uses of ICT and changes to organization and industry structures, we examined the residential real estate industry. Real estate is a revelatory industry for the study of ICT uses because it is information-intensive and realtors are information intermediaries between buyers and sellers. As agents, buyers and sellers increase their uses of ICT, they also change how they approach their daily work. We use structuration theory to provide an analytic perspective within this setting.

The central theme of this article is the relationship between material practices, social identity categories and the duality of structure. The latter concept, linking structure and agency in Giddens ’ structuration theory, is here understood as dependent upon the negotiation of categories, such as ethnicity/community, social status, religion and gender, through practices like dwelling, eating and appearing. Such practices can be interpreted from the material patterns that emerge from multi-dimensional and multi-scalar analyses of archaeological data. These ideas are worked through in a case study of Britain in the fourth and early fifth centuries AD, wherein some of the relationships between practices and institutionalized identities (such as those associated with the military) can be discerned. An emphasis on the negotiation of identities in practice also places the theme of temporality at centre-stage, offering a new perspective on the balance

between structure and