Abstract Technology described herein, at least in some embodiments, relates to frameworks and methodologies configured to determine probabilistic desire for goods and/or services (collectively referred to herein as "products"). Embodiments of the invention have been particularly developed in the context of a real estate environment, for example to identify consumers with a threshold probabilistic desire for financial services, such as home loans, and/or other goods and services. This is used, for instance, to generate sales leads in relation to such products. Examples are described by reference to a situation where data from a plurality of instances of real estate practice management software is utilised by a central lead generation tool. FIG. 1 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