Obama's Web team might have newfound power to anoint aspiring technologies just by using them. For Blist -- which is still in beta testing, having launched only last February -- it's hard to imagine a better promotional vehicle. Just in the last day, the site was mentioned by dozens of blogs. Still, the leaders of Change.gov want to avoid appearing to endorse any product and would not comment on why they selected Blist, which has several competitors. The Obama team first contacted Blist a week earlier with questions about whether the Blist system could be revised so users could be warned if they left Change.gov while using the widget's features. The government requires the notice, and the president's team would like to use Blist's service, the company was told. Of course, Blist was happy to oblige.