how about an AI program which takes a keyword phrase, then outputs a highly SEO'd Pulitzer Prize worthy article of user defined length every time? how about an AI program that socially engineers owners of PR10 websites to link to your website on each page of theirs? how about an AI program that researches niches and keyword phrases for you? How about a program that combines all three of these AI's into one? give you a dollar for it.
Create some extendable system that does something that you care about. Think about what interests you.
what is big project for you? for me in computer project it start at 1000 days person project. for what? fun, to make something that you can sell, to learn, etc. with the trend in dofollow and nofollow these day making a keyword dofolow lister with PR and open comment page that show the subject could be a cool gadget and can possibly makes money (look at some sig you will see some selling just some link for good $) if it's product idea: The company where I work for and I have 4-5 projects from a couple hundred thousands to milti-million$ projects for business, the problem is we don't have that money to invest. we have a hundred thousands$ going on and on the market we now looak at another hundred thousands$ I would say you can look at some project in the open source wold that need "love" source-forge for example have a lot of project that are not develloped even if great idea you can particiapate