If you are aiming on iOS and Android with Windows Phone 7/8 as a plus you should use C# as the language and Xamarin Studio as the IDE/Framework. You may also choose to use Visual Studio on Windows as an option. Take a look on their website: http://www.xamarin.com Even Microsoft is using Xamar...
I personally have had success with the Google Keyword Finder. This is part of the Google Adwords program for estimating keyword traffic and since Google has statistics on everyone's surfing and search habits, this is your best bet. My advice to you is that before you try estimating server traffi...
I host 100s of high traffic, high speed, WordPress sites. If a client asked me this question... I'd say... This type of spaghetti setup is okay for a hobby site. Not for a real + money generating + pay your bills type of project. For real (money generating) projects. Keep tech simple. I run s...
My recommendation would be to outsource for as long as possible and focus your time and energy elsewhere. Build the simplest, least expensive solution possible and test whether there is sufficient marketplace demand for the concept before investing one dime more than necessary. Cheers, Frank