Unfortunately I do not think that I have very strong areas CS wise, although I tend to pick up things quickly - last job I did was aggregating data from multiple types of databases, dealing with varying latencies, and presenting the results in an interface that made sense. Before that I was making a small bot for a flash game and I learned about things like minimax, alpha beta pruning, etc. Learning is a very strong source of motivation for me.
I guess this reply is also a good place to put down some of the ideas I've had lately.
- Improve workplace conditions by aggregating work experience and satisfation levels from employees; extract low-hanging fruits from the data. Use scale to improve results quality. Use that same data to advise job seekers as to which company would be good for them. Use game mechanics to get employees to contribute, and also game mechanics to get employers to implement the advice given by the system.
- Make a game distribution platform that takes a lot less money from the developers (last time I checked the margins were around 30%). They would hopefully all fly there.
- Location-aware shopping site. Many people around here regularly check nearby small clothing stores for fresh stuff. The app would be a minimalist display of the latest arrivals in their neighborhoods (google maps integration etc etc).