从Freelancer的热门Skill看看你应该学什么？

以下数据是2012-1-31号数据。

Websites, IT & Software:

PHP (2402)
HTML (1639)
SEO(877)
MySQL (836)
Link Building (635)
Facebook (578)
JavaScript (560)
.NET (485)
Social Ietworking (434)
Software Architecture (407)
AJAX (379)
eCommerce (306)
Java (248)
C++ Programming (235)
C# Programming (225)
Joomla (219)
C Programming (163)
Shopping Carts (196)
Twitter (187)
HTML5 (160)
jQuery/Prototype (134)
Web Scraping (130)
ASP (122)
Visual Basic (120)
Magento (114)
Linux (100)
--------------------------------
Mobile Phones & Computing:
Mobile Phone (417)
iPhone (394)
Android (309)
iPad (200)
---------------------------------
Design, ledia & Architecture:
Website Design (1850)
Graphic Design (1457)
CSS (264)
Photoshop (247)
Flash (226)
Video Services (105)