Following is definitely a part of orienteering. Sometimes it is classed as cheating, sometimes fair game. Sometimes orienteers are given strict instructions to follow at all costs. Following is not the same as pack forming where people are often pushing themselves harder by running with someone.
BUSA last weekend is a good example of where following occurred due to differing abilities, relatively high visibility of runners ahead and a short 2 minute start interval.
Someone has even said "if you can keep up, there is no reason not to follow". I also had an opportunity to simply follow and although it would not have improved my finishing position it would have got me a faster time but I chose a different route round some green rather than straight, perhaps put off by the really horrible dark green at Dalbeattie the previous week! This time it was 30 seconds slower but looking back I still would have chosen it. Maybe I didn't execute it quite well enough but basically it was ok but it was enough to get dropped and the opportunity to follow was gone. I was a bit scrappy round the last loop and my shoelaces were untied and basically not the best...

Anyway I thought about the above statement and although I agree sometimes like in a relay where the whole pack goes one way it is usually better to follow (but not in the case of Anders Norberg going straight at Tio Mila) in this case I disagree, there are some reasons not to follow..
1. you think you are taking a better route
2. you believe in your own ability
3. you are not a leech
4. the pursuit of mastery is more important to you than a meaningless result
5. you like orienteering for orienteering not for running after someone's ass
and there seems to be only one reason to follow
1. you want a free ride to a meaningless result.
maybe it is not a meaningless result. in this case it was also a selection race, but two competitors particularly had plummeting lines on the splits graph which clearly levelled out. so what is that in the eyes of the selectors? everyone knows they have followed, they openly admit to having followed so does their result really count for the same as if they had run totally alone? what do you reckon? if it is fair game then why do people who have been followed still feel a bit angry about it?