Without trying your app (not available to US users) or knowing if it's a freemium or ad model, I can't really provide too much insight.
KISS and Mixpanel are nice, but there's little to no point in using them if you don't have your KPIs prioritized, and they may be overkill. I've found it just as effective to track growth via Google Analytics and a series of SQL queries, in conjunction with a dashboarding service like chart.io. I also used Flurry for a while, but it frustrated me quite a bit (Mixpanel offers a lot of the same features, btw). And if your app is HTML5, GA event-tracking is just as effective.
Since mobile is the primary interface, month-over-month growth rate is your live-or-die 'macro' metric, calculated as simply ('users_at_end_of_last_month' - 'users_at_end_of_prior_month') / 'users_at_end_of_last_month'. As of Apr 10, users_at_end_of_last_month would be Mar 31 and prior_month would be Feb 28. Many contextualize this metric as 'churn,' for which there are numerous calculations. Shopify gives a good example. 
Of course, it's way more complicated than this. And other KPIs include iTMS downloads/ratings/reviews, average time-to-subscribe, average time per session, number of events per session, DAU/WAU/MAU, e-mail conversion (assuming you manage lists/campaigns), etc.
There was also a pretty good overview of how to set up cohort analysis via SQL queries on HN today . Here's where you may want to start using Mixpanel, but only if you're running targeted campaigns.
Most importantly, read up on Andrew Chen's blog, starting with this post . This series by the Rapportive CEO  is also a good model.
Absofuckinglutely this. These 'hacks' annoy IT directors and allow self-described Deliverators to congratulate themselves amongst their script-kiddie nmap brethren in some private IRC. Then there's the more altruistic 'hacking' which uncovers truths obfuscated by those who've wronged in the interests of greed and cronyism.
This prank is immature, ineffective and honestly a waste of taxpayer money - additional personnel will be hired and major unnecessary purchases will be made of consulting services and software and equipment which we'll likely have to foot the bill for.
You're doing nothing to protect our civil liberties or expose the misdeeds of the corrupt and complacent. Try again.
For those with vanity URLs and GMail - the trick I use to manage unsubscribes better is to enable 'catch-all address' and registering for new accounts by their URL and TLD, e.g. news_ycombinator_com@URL.com, or kennethcole_com@URL.com, etc.
Two benefits - 1) easier to remember my login per site and 2) if I start getting spammed as a result of my info being shared with third-parties, I can attribute the original offender to the e-mail address.
Also a good way to get vast amounts of dictionary attack spam. One of the mail domains I host was accepting mail to all addresses for some years, and this seems to have attracted even more spam: the volume of junk it gets is disproportionately huge compared to the other similar domains.
My mail server allows -- as an alternative to + so my users can work around braindead address regexes.
You also get few hundred "new viagra price" in your spam folder sent to HjvhBYgVqJ@your.domain. You'll never find email@example.com in that mess. Even worse is that you get bounced spam emails sent to firstname.lastname@example.org with from header sent to HjvhBYgVqJ@your.domain and spam filter doesn't see them as spam.
I thought the backdrop looked familiar. The first and third photos were taken next to the Sokos Hotel Vaakuna (located across the rail depot), where I stayed when I was in Helsinki in late June, at the time of the summer solstice (20+ hours of light). I'm no photography expert like anovikov, but I can attest that the street lighting was nowhere near as bright as depicted in these photos, even at 2am when it was darkest (dark = same brightness in the sky as first photo).
Now it's perfectly normal to slightly alter promotional collateral as long as there's some YMMV caveat. But with such a flagrant abuse of consumer trust as presented here, it calls into question just how desperate Nokia is that they need to misrepresent a core feature of their savior product.
Files from a larger chip go into print collateral alot better... This is pretty much to be expected. File would be PS'd as well, that's one of the reasons they do this, as the colour-space transitions to CMYK etc can be damaging. They do need to have better disclosure though. Starburst is telltale DSLR.
IMHO, MSFT's made somewhat strong progress on its integration of Skype (so far), promoting it as a strong value-add for the forthcoming XBox Live and WP8.
Yammer's a much-needed HR/quick collab tool for MSFT's appeal to CIOs, and I'm guessing it'll likely come to fruition as an integrated feature in Office 2018, and a beta feature in Office Live sooner than that. It's a good fit - much better than Salesforce buying them out to stifle MSFT/GOOG.
Love the idea, and I just applied. But dismayed to read point #2, especially as I ticked 'no' for the last question.
Does this mean that I won't be considered as a likely candidate if I'm just an entrepreneur, or someone who really wants to put these newfound skills to use but doesn't yet know how? If that's the case, some additional details as to admission criteria would be welcome in the FAQ.
Hi Ned - would you all consider offering a free scholarship for the Fall course as well? I think for those who are already employed, the July 23rd start date is a very quick turnaround to quit or take a leave of absence. It would be much better to have more time to prepare.