The Customer Review section on Amazon.co.uk is often very useful, and will often give you insight into what it is that you are interested in buying.
However, once in a while an item comes along that fits into the review culture, and humour is the winner. The most recnt of these to be stumbled upon by me, is the BiC Crystal Ballpoint Pen, Medium Point, Black, sold singly.
For those without the time to read all the reviews, a very small sample of some of the finest point are:
Writes on paper
Mightier than the Sword
Useful as cooking utensil
Not left-handed accessable
Can only produce images in black and white
Poor taste in mouth
Requiers expertise to operate
Not "Crystal", infact some petroleum-based polymer