Pick a few people and maybe create special profiles that come up when someone searches for them. Have the profiles feature a headshot, Twitter profile, Facebook page, website, etc as the top search result (a bit like Google's World Cup stuff - <a href="http://www.google.com.au/search?hl=en&q=brett+holman" rel="nofollow">http://www.google.com.au/search?hl=en&q=brett+holman</a>).<p>Make them interesting enough that when the people in question find out about them, they want to show their friends.<p>Find some way of notifying them, either through a Google search or ad, or even just contact them and explain that you're interested to know what they think about the profiles idea. (In truth, you will have chosen them specifically because they talk/post fairly often to a broad audience.) Make sure they know that you're fine with them publicising the link, it's not secret or anything - in fact, the more feedback the better. They might be more likely to spread the word if they feel that they've been chosen ("I wanted to choose some of the best designers around to get initial feedback.").<p>If not profiles, find some other way of presenting DDG that is unique to them. You probably don't want to follow in Google's semi-aborted footsteps of mimicking Bing's background image, but that could be a way of getting designers on side - background or masthead or sidebar. "Hey guys, I got picked to design one of Duck Duck Go's unique mastheads - they're the new Google. Check it out here..."<p>(Thinking aloud.)<p>Of course, you'd want to be honest with the feature you were involving them in (not a masthead that'd never be used live, etc). Otherwise, it reminds me of a publicity method some dodgy guy I knew wanted to try. Build a site for a start-up and then email thousands of web developers asking for quotes to redevelop the site (then never proceed with the project). Then email thousands of accountants and explain your business and say you need help with your accounts and ask if they take on this sort of work, but never follow through. And then thousands of office cleaners, and IT supply companies, and graphic design companies and caterers (to cater your launch party, of course), removalists and so on.