I've been prompted by a bit of skipping at the back to check out my freewheel and have found to my amazement that I have actually managed to wear the bugger out. (I only got back into cycling about five years ago, and kind of took it as read that things like freewheels last for ever. Apparently not.) Ok, so I'm getting a new freewheel, and I've heard that if you get a new freewheel, you have to get a new chain. So my question is, can I just buy 'a chain' - this one, eg - or is there a significant difference between chains (and if so, what should I look for?) Thanks for any advice.