I've often wondering this question and have tired analyzing which keywording works best.
1- Do you put a singular keyword as well as the pluerize version in your list? for this example, chair, chairs, row, rows, seat, seats.
2- Do you put the singular keyword and simply include an "s" in the keyword list. Example;blue, stadium, chair, row, seat, s, ..
I have seen and used both examples. So really my question is; when a client searches "stadium seats", is it more beneficial to list all the pluerize keywords (seat, seats) or will the client's search of "seats" come up if I only listed "seat" and "s"...
Up for debate...Even though I know the personal secrets to keywording are very guarded :)