BoingBoing's bloggers have posted comments from readers who want to pitch in tech skills and gear to help with the Katrina nightmare. Someone even suggested turning the Superdome into a massive Internet "cafe." The lack of electricity has created a communications meltdown, cell phones being useless without service or a way to charge. Community tech tools involved include the sobering Lost and Found section of New Orleans's Craigslist. Those who can are snapping digital pictures and posting them to photo-sharing Web sites such as Flickr. A Katrina wiki has sprung up, but so have scam donation Web sites.