Abstract: Methods, system, and computer program products for associating off-line transactions involving a product with visitors to a web-site. Data relating to an off-line transaction and data relating to visitors to a web-site is received in a computer. The computer determines a score for each visitor based on a number of page views relating to a product in the transaction. A subset of visitors may be determined based on the scores. A likely candidate may then be selected from the subset of visitors using matching methods that compare e-mail addresses, IP addresses, geographic proximities, and times of event occurrences of the transaction to those of the visitor web sessions. The visitor having the strongest match may be identified as a likely candidate, and a web session generated by the likely candidate associated with the off-line transaction for analytics analysis of web marketing and web-site design effectiveness.