In order to ad content, which the search engines value highly, I added a Travel and Adventrue page, with the idea that folks who have a GDI income have the resources and time to Travel. Since I am pretty new it is a work in progress, but it allows me to hook up with link exchanges to hotels, travel agencies and that sort of thing. It is not computer related.. but it works in with the theme of having the time do do what you want.. I suppose that having the time and money to buy scuba gear, basket weaving materials and that sort of thing could be woven into adding underwater basket weaving.. it is all in how you .. integrate.. so if you have something you love, there is no reason you cannot add a page like.. Now that I am a GDI affiliate, I have time/money for my favorite thing.. collecting bottle caps. or whatever.
It is true that you do not want to go too far afield, but there are as many reasons to have a website as there are people.