Abstract: A method to plan a trip comprises, at a travel service site, establishing a homepage for the trip; contacting, such as by emailing, potential trip participants from the travel service site for informing them of the existence of the trip homepage; and making travel arrangements related to the trip by using tools provided to the potential trip participants at the trip homepage. The travel arrangements may include arranging payment for the trip, and/or arranging accommodations during the trip. The travel arrangements may also include determining which trip participants will share lodging accommodations during the trip.