As some other commenters have mentioned, and I've experienced myself - there are a lot of "small but profitable projects" in the internet marketing and advertis

As some other commenters have mentioned, and I've experienced myself - there are a lot of "small but profitable projects" in the internet marketing and advertising space. The best approach might be to join or partner with an online marketing agency. They often have customers who want more than a simple web page, for example a Facebook game to go together with an advertising campaign. That said, most software engineers in the world do not work for big-team, Computer-Science-heavy software companies. They work everywhere building internal software to support the business in various other fields. However, finding or selling to these companies might be more difficult as an individual freelancer, as they might not even realise that their work could be optimised with software.