There's more: it can tweet indie rock lyrics or your feelings on the new microbrew you just discovered. It can upload Twitter pics of the sexy 20-somethings you met on your journey through the Gotham night. What happens if one of your friends is at the party CouchCachet selects for you? Not going to happen, because the app uses a Foursquare parameter that lets you search for locations your friends have never visited. And if all your friends start using the service? "This is fine, we have robots talking to robots," Mr. Fountain said. "This is the future."

On the other hand, who needs friends. Unsure whether the cute guy you just met is ignoring you, or just really busy? Post the specifics to dating advice service HeTexted, and let 40 strangers break the bad news. Make that hundreds of strangers. At the prodding of HeTexted cofounder Carrie Henderson-McDermott, an audience member named Victoria recounted a scenario: She'd met a guy at a party, he asked her out, then texted days later to say he'd come down with something. By an overwhelming show of hands, the audience agreed: Sorry, Victoria, he's just not that into you.

What do Mark Zuckerberg, Marissa Mayer, Fred Wilson and Gollum have in common? They all showed up in RunGold CEO Vivian Rosenthal's demo. The company earned notice in 2011 when it helped shoe seller Airwalk create something called an invisible pop-up store in Washington Square Park. Now it's using its augmented reality chops to help users create and share images with branded content. Photo-bombs away!

Also virtual, these days: your medical care. At least, if you work for Tumblr, Percolate or another company buying employee health plans from Sherpaa. Companies pay $1,000 to $4,000 per employee; in non-emergency cases, employees enter their symptoms over Sherpaa's online platform; doctors are on call 24-7 to dole out advice and certain treatments, and route patients to the appropriate specialists. How does the company suss out drug-seeking behavior, an audience member asked? Sherpaa doesn't prescribe narcotics, founder Jay Parkinson said. "If you're overdosing on amoxicillin—well, I've never actually seen that."

Mr. Parkinson

Last August, Betabeat profiled Jay Parkinson, the Williamsburg doctor who first won over New York techies in the late aughts by reinventing annoying doctors visits. The hipster doc hacked together his own system--trading insurance premiums and wait times for a Google Calendar, Skype, and PayPal. He eventually formalized the system under a startup called Hello, Health until he parted ways with the company in 2009.

Now, Mr. Parkison is back at it with a similar venture called Sherpaa, a concierge health service he was just developing when we spoke. Sherpaa works with directly with employers to give company staffers 24/7 phone and email access to Sherpaa's physicians, which the startup refers to as "guides." (Get it??)

Imagine consulting an expert instead of WebMD when you have that weird nagging pain in your jaw, but no time to leave the office. Or opting to email a picture of an injury instead of visiting the emergency room. Sounds well-suited for a heads-down office culture.

The company officially launched earlier this year with Tumblr as its sole client. (Perhaps they were attracted to Sherpaa's excess of vowels.) In recent weeks, Fast Company reports that the healthcare startup has been signing up other clients. But the most telling detail is a stastic Mr. Parkinson shared with GigaOm: so far, 80 percent of Tumblr's employees have used the service.

GigaOm says Sherpaa charges employers a flat-fee per month per employee, but Fast Company describes the business model a little differently:

Sherpaa cuts out wasteful spending by going to companies, analyzing their health care, and securing them a plan that is more in line with how their employees use medical services. They generally recommend a deductible of at least $2,000, and then ask companies to give employees a $2,000 debit card for health care. Whatever they don’t use goes back into the company coffers. In the end, these companies can save $2,000 to $4,000 per employee, even with the debit card.

Sherpaa doctors only work remotely, but can assess whether patients need a prescription or specialist referral. The startup currently has one doctor on call, but 100 specialists and plans to expand to 150 to 200 New York City doctors in the future.

We've reached out Mr. Parkinson for more details and will update you when we hear back.