ABSTRACT A computer implemented method for determining probabilistic desire for goods and/or services which involves monitoring data indicative of consumer behaviour, determining whether any desire prediction rules are satisfied, and in the event a given one of the desire prediction rules is satisfied in respect of a consumer, performing an action associated with said one of the desire prediction rules, wherein each desire prediction rule is associated with a specific product which product includes any one or more of financial services, legal services, utilities services, household services and insurance services and wherein the data indicative of consumer behaviour is indicative of consumer behaviour observed in relation to activities including real estate activities. 1/3 - 100 110a 110b - 110C 110n Lo calDtbs Lo cal Database Lo cal DatabaseLoclDtbs Lo~~ ~ ~ ~ ce I o ms Practice Practice Practice Management Management Software Software Software Exemplary Client Exemplary Client Exemplary Client replay Cln Termina Terminal Terminal Terminal (Real Estate Agent Site) (Real Estat Agent Site) (Real Estate Agent Site) (Real Es Ag i 100 102 - 103 143 Data indicative of consumer behaviour Input processing Da a Cleaning ma ae n module Mod em e 104--- 118 Database Update Module Exemplary Consumer Behaviour Rules ClientTerminal Database Repository (behaviour monitoring server _ Rules engine administration) 141 --- 140- 149 Lead Monitoring Module Lead Database Behaviour Monitoring Server 48 Ledmonitoring Lead monitoring Lead monitoring Lead monitoring sotaesoftware software U U U software Exemplary Client Exemplary Client Exemplary Client Exemplary Client Terminal Terminal Terminal Terminal (Sales Entity) (Sales Entity) (Sales Entity) (Sales Entity) 160a - 160b 160C 1 60n FIG. 1