I'm a senior developer working mainly on online GIS based applications at present. Having relied on sites like Stack Exchange for assistance for years, it suddenly occurred to me to give something back and answer the odd question or two!
Q&A for professional and enthusiast programmers
Q&A for cartographers, geographers and GIS professionals
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for contractors and serious DIYers
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for professional system and network administrators