That is and has been a huge issue over on Actifit. We were dealing with those posts in the Sports group and always going back and forth about whether or not they are okay. There was the argument that the exercise itself was the effort and therefore they should be allowed. I didn't necessarily agree with that, but others did.
Well it is up to those who vote to decide, but just saying you did something is not that entertaining. I wouldn't necessarily give it a vote.
I typically don't either. I remember it was a very heated debate though.
I think with some Actifit posts it's just the walking around they did anyway. I gave up on that dapp. I think @exhaust can provide better stats, but it's just one developer and so will take time to get more features.