I'm getting ready to market my digital development agency (web & mobile). Should I hire a sales/marketing person or go at it solo?

You've answered your own question. Reach out to your prospects with the question, such as "How would you...". Ask what people want then give it to them if you can with integrity and thoughtfulness.

I've been in the picture messaging space for a while now with my apps Lutebox (voted one of London's top ten most loved apps) and now Click Messenger. I've written a few articles about the space including a recent post about the Future of Mobile Messaging. Snapchat started out as an app called Picaboo, which pretty much did what it does now (prior to the latest update with chat and video calling). They quickly rebranded but saw a little uptake in user numbers and had quite low downloads for several months. Then around Christmas 2011 one of the founders' mom had told her friend about the app, who told her kid and her kid basically then spread the word throughout their high school in L.A. That was what really blew up their download numbers as it spread across teenagers at local high schools. As far as I know they didn't advertise in the early days, relied solely on word of mouth. Also it is assumed that they have a solid user base. Comparatively speaking, their user base may be in the low tens of millions, which may a great base of users, but nowhere even close to being as big as Facebook or Twitter. I'd be happy to speak about this in more detail or about the picture messaging landscape and what I believe to be the future of mobile messaging.

Hello! Aside from the typical website platforms, I would recommend using Twitter's hashtags and user handles. Try following and using the ones that your potential prospect or otherwise ideal partners would be following and start sharing about your work, your progress, and outreach for a potential partner. If possible try to be local when doing so. But obviously, some to use include Startups.co, Basecamp, Inc 500, yesPHX, BetaBulls, MPV, Lean Startup, Lean Methodologies, TechCrunch, etc.

I have no experience with salons, but marketing is my thing. So I'll give you some suggestions of what to think about, followed by what to do. Do you have clients already (let's say from your working days at another salon)? If so, you can start profiling them. You can ask them to fill out a form in exchange for a free gift (maybe one of those creams you use in the salon), or an entry to a raffle (where the prize is valuable). In the profiling, you want to look out for which neighborhoods they live in, what kinds of activities they like to do, what kinds of social events they love to do, and their occupations. Then, using each of those profile data, you can market to more prospects who share the same characteristics. For example, - You can set aside a budget to send flyers to specific neighborhoods. In order to get people into the door, maybe you can offer a certain procedure for free in exchange for opportunities to win new regular customers. (You could theoretically do this with Groupon too, but you have less control of who comes into your door) - You could set up joint venture relationships with organizations like ball room dancing schools, professional associations, etc. You could offer an exclusive discount with those groups to entice potential customers to try out your service. More opportunities for you to win regular customers. - With certain demographic data, you can probably make the same offer by advertising on Facebook. If you target specific enough, you can get the price of acquiring the lead to be pretty cheap. You would have to figure out your typical lifetime value of your customers before deciding whether advertising on Facebook would be worthwhile. One last thing, you can offer gifts for your existing customers if they refer you people. If you have any more questions, I'm happy to chat with you. Hit me up on this platform.

Your best bet to get traction quickly in USA is to advertise on mobile ad networks. You may need to advertise on CPM/CPC basis instead of CPI if you have a paid app so make sure you understand your user lifetime value and watch conversion rates closely so you don't overspend. That said, depending on what your niche/vertical is, there are many other ways to market non-gaming apps.