[markddotme]

One thing you could do is lock down the brands you've chosen (all social media services, Gmail acct, domain + privacy with a deep discount promo code, etc) and put up temp pages (i.e., Launchrock). Then soft promote them (PPC, build links, Facebook, etc) and see which one resonates better with your target market. Don't spend too much money/time on this though unless it's for a project where you can recoup your costs/investment. Keep in mind though that people typically associate more with what's actually behind the brand - quality/consistent blogging, engaging conversation on Twitter, insightful presentations, video, events, etc. - and that's where you'll find the traction/following that will eventually build your chosen brand.