both the market and its participants are based on each one's perception of the other rather than the market simply being the sum of all its participants actions as is usually the case. Thus, by being an effect greater than the sum of its causes, and as it occurs spontaneously, the cluster effect is a usually cited example of emergence. Governments and companies often try to use the cluster effect to promote a particular place as good for a certain type of business. For example, the city of Bangalore, India has utilized the cluster effect in order to convince a number of high-tech companies to set up shop there. Similarly, Las Vegas has benefited through the cluster effect of the gambling industry. In France, the national industrial policy includes support for a specific form of business clusters, called "Pôles de Compétitivité", such as Cap Digital. Another good example is the Nano/Microelectronics and Embedded Systems" or in short "mi-Cluster" that was facilitated by "Corallia Cluster Initiative" in Greece. Corallia introduced a bottom-up, 3-phase programme framework for facilitating cluster development, and was short-listed among the final classification (finalists) for the DG REGIO's RegioStars 2009 Awards in the category "Research, Technological Development and Innovation". Clusters, were proved to boost the innovative activity among firms of the same industry. One of the main causes that might be highlighted is the competition between the companies. Moreover, except of stimulating a favorable conditions for the exchange of ideas, industry-specific regional concentrations, also create a thick labor market input. Hence innovations increase the accumulation of the knowledge in the region which influences on the local internal economies. The cluster effect does not continue forever though. To sustain cluster performance in the long term, clusters need to manage network openness to business outside the cluster while facilitating strong inter-organisational relationships within the cluster. Its relative influence is also dictated by other market factors such as expected revenue, strength of demand, taxes, competition and politics. In the case of Silicon Valley as stated above for example, increased crowding in the valley led to severe shortage of office and residential space which in turn forced many companies to move to alternative locations such as Austin, Texas and Raleigh-Durham, North Carolina even though they would have liked to stay in the valley. Sometimes cluster strategies still do not produce enough of a positive impact to be justified in certain industries. For