In April BlueTie signed a deal with Barry Diller's InterActiveCorp (nasdaq: IACI - news - people ) to host 2 million e-mail accounts for its Excite portal and other brands.
That's potentially bad news for InterActiveCorp's (nasdaq: IACI - news - people ) TicketMaster, which has agreements with many pro teams and concert venues as a primary ticket distributor but isn't set up to broker deals between customers.