used to represent 'your mileage may vary' meaning 'how far you will
be able to go depends on (usually external) factors relating to yourself', such as locality. Often used in deal forums
to indicate that the OP (original poster) was able to complete
but it is unlikely or uncertain that others will
be able to do the same. Can also be used to represent 'your market may vary' which is more
appropriate for internet deal forums
to some, especially people foreign to the english language. Often used in internet forums
to indicate the likelyhood of something happening is uncertain.