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gspyrouon Ask HN: Which javascript charting library to use?

Raphaël—JavaScript Library http://raphaeljs.com/

gspyrouon Ask HN: How to get contracts signed.

You could take a look at the United Nations Demographic Statistics on Azure Marketplace. http://datamarket.azure.com/dataset/unitednations/demographi...

http://datamarket.azure.com/browse/data?category=demographic...

gspyrouon Ask HN: Scratched my own itch. Is one week too soon to pivot?

You may find interesting this presentation from patio11 "Marketing Software, For People Who Would Rather Be Building It" http://www.kalzumeus.com/2013/04/24/marketing-for-people-who...

gspyrouon Ask HN: Are mobile apps profitable?

An interesting presentation on this subject "Thriving in an App Store World" http://jury.me/blog/2013/4/2/thriving-in-an-app-store-world

gspyrouon Ask HN: Mobile app with 2+ million downloads, what next?

You could try selling it via Apptopia http://www.apptopia.com/

gspyrouon Ask HN: What phone do you use?

Nokia Lumia 800

gspyrouon Ask HN: What are some good tools for converting GPS data into a location name?

Try using Google maps reverse geocoding https://developers.google.com/maps/documentation/geocoding/#...

gspyrouon Ask HN: Name a mistake you continually make.

Check this by patio11 "Ramit Sethi and Patrick McKenzie On Why Your Customers Would Be Happier If You Charged More" http://www.kalzumeus.com/2012/09/21/ramit-sethi-and-patrick-...

gspyrouon Ask HN:Is there good marketplace for selling software beside phone marketplaces

For mobile apps you can check out Apptopia http://www.apptopia.com/

gspyrouon WireframeApp is for sale: Please, help me find a new home for my app

You could also check out Apptopia http://www.apptopia.com/

gspyrouon Ask HN: What are you working on (elevator pitch)?

Earthquakes Monitor provides notifications via phone for earthquake events that have occured near your location using USGS data http://www.youtube.com/watch?v=x5hg7Oxh-jI

gspyrouon Ask HN: What are app developers buisness models?

I have localized some of my WP7 apps using gengo.com .

gspyrouon Ask HN: How do I present my prototype to you?

You could try using Baslamiq Mockups http://www.balsamiq.com/

gspyrouon Ask HN: Is Apple on the decline?

Would love it if you could share your experience running Win 8 in dual boot on the new Macbook Air. ( I am also considering this option)

gspyrouon Ask HN: What is your single favorite song to listen to while hacking?

Ennio Morricone - Metti una Sera a Cena http://www.youtube.com/watch?v=SWTNB5gRuXs

gspyrouon Ask HN: How to monitor Twitter etc. for people having the problem you solve?

You may check this blog post by @maxklein http://maxkle.in/the-cheapest-way-to-discover-if-a-startup-i...

gspyrouon Ask HN: Best way to conduct market research?

You could try using Google Consumer Surveys http://www.google.com/insights/consumersurveys/examples

gspyrouon Ask HN: Where should I go on vacation

Spring and early summer are great periods for visiting Greece http://www.visitgreece.gr/deployedFiles/StaticFiles/Brochure...

gspyrouon Ask HN: Becoming an iPhone app Dev.

Not a native iOS dev , but I have had a good experience by building apps using PhoneGap http://phonegap.com/ .

gspyrouon Show HN: Earthquake Notifications from USGS using Twilio

Clickable http://youtu.be/x5hg7Oxh-jI

gspyrouon Help with Android app

If you have experience with HTML/Javascript you could take a look at Phonegap Build https://build.phonegap.com/ .

gspyrouon Ask HN: I need to talk to a mobile developer

Let me know if I can help , george.spyrou@gmail.com

gspyrouon Ask HN: Most affordable method to host a lot of files

You may aslo take a look at Windows Azure Storage https://www.windowsazure.com/en-us/pricing/calculator/

gspyrouon Cocoa developer here. What APIs/tools for writing a commercial Windows app?

My suggestion would be to use Silverlight :

1.Single codebase between Mac & Windows

2.Out of browser support

3.Rich UI capabilities http://www.silverlight.net/showcase

Seeismic Desktop 2 is a good example .

gspyrouon Ask HN: Evaluate my side project please?

Some ideas :

1.Add some kind of copy that describes what the site is doing

2.Include free apps for WindowsPhone and Blackberry

gspyrouon Ask HN: Is there a site that aggregates rental properties in the US?

Zillow ? http://www.zillow.com/homes/94117_rb/

gspyrouon Show HN: I finally relased my first product

Also , as patio11 mentioned a better visual design would be helpful for your site. You may find great templates for a low price at http://themeforest.net/

gspyrouon Show HN: I finally relased my first product

First of all congratulations ! Some feedback : on IE9 at the registration page the textboxes appear emtry (no username,password,confirm passwork text) , a visitor would probably hit the back button !

gspyrouon Ask HN: Windows phone dev success/failure stories?

For the following 6 apps :

-Earthquakes Monitor http://plusapps.eu/Earthquakes-Monitor.html -Frankfurt Airport http://plusapps.eu/Frankfurt-Airport-Information.html -Berlin Airport -Munich Airport -Athens Airport -Child Growth Standards

Trial Downloads : 1027

Purchases : 295

In my opinion the main problem with the Windows Phone Marketplace at the moment is the low sales numbers of devices. With the new version of the OS and the addition of NOKIA hardware Microsoft hopes that they can achieve a bigger market share.