HotelWebsiteMarketing.com has announced a series of conferences to take place across Europe in May and June, 2011. Also, TripAdvisor, Availpro.com, Meetingsbooker.com, reviewPro.com, TIG Global, and other leading travel companies have joined the conferences to speak and contribute. The focus will be on hotel sales, marketing, revenue and e-commerce, among the many other topics.