Yahoo Finance API

.NET Wrapper for Yahoo! WebService
http://code.google.com/p/yahoo-finance-managed/

Stock quote and chart from Yahoo! in C#
http://www.codeproject.com/Articles/37550/Stock-quote-and-chart-from-Yahoo-in-C

Yahoo finance CSV data
http://www.gummy-stuff.org/Yahoo-data.htm

Smartphone OS market share

Smartphone OS market share
Percent of U.S. market
Source: IDC

Dynamic Properties for PropertyGrid

http://www.codeproject.com/Articles/189521/Dynamic-Properties-for-PropertyGrid
http://www.codeproject.com/Articles/11383/Hiding-Inherited-Properties-from-the-PropertyGrid
http://www.codeproject.com/Articles/48015/Exploring-the-Behaviour-of-Property-Grid