A recent study by CENTRIS has determined that nearly half of responding American internet users would use WiMAX for portable e-mail, including video and picture attachments. Obviously, other multimedia were of interest to users: 31% would use streaming online media, 28% would take advantage of mobile entertainment such as on-demand TV, and another 28% would use WiMAX for downloading music. WiMAX is kind of overkill if most consumers just want to check their e-mail, which really does put BlackBerry in a favourable light. Bigger pipes will expand the scope of e-mail, but the basic service is already nicely locked down by RIM. The second-biggest consumer concern about WiMAX was portability – it needs to go where you go, not the other way around.