I am expert in the internet field.
I find it very challenging, because you can really put your imagination at work.
That's what I do, I like to see things getting build from ideas. I like to challenge the freelancers by working with them on complex projects and provoke them to deliver the best possible results they can.
If you ever bid on my projects, you will find yourself doing challenging works that you never done before...so you only bid if you know that you can deliver results.