Marketing knowledge

This is just an observational post... observations about me going to ebay.I was looking at my family room at the soon-to-be open space from where the futon used to live. I had the, admittedly slightly defective, thought that "wouldn't it be fun to build a bike over there?"I went to ebay nonchalantly looking around at old beemers -- somewhere between 70 and the early 80s. (ahh... the good old air heads...)But that's not what I saw at first.The front page was an assortment of:

• Bicycle parts
• Fountain pens
• Electronic parts and test equipment
• Radios

I guess ebay has figured out what I tend to buy.  :-)