Travele-commercecouldreach$20billionby200110May1999SHERMAN,Conn.?Travele-commerceisexpectedtoreachUS$20billionby2001,aseven-foldincreaseover$2.5billionin1998,accordingtoInternettravelresearchreleasedtodaybyPhoCusWright,Inc.OnlinetravelbookingsareexpectedtosurpassUS$6billionthisyear.DespitethefactthatairlinesandhotelsareinvestingheavilyintheirWebsites,weseefiercecompetitionfromonlinetravelservic...