I disagree - its a gateway to view all your items, and make a purchase from something else.
Haha, my adjectives are ridiculous sometimes. Its part filler, part hype, but important nonetheless.
Ebay will allow a return for any instance (whether you accept returns or not) so you might as well save yourself a item not as described case and just take the return. It will get better, don;t be discouraged.
Basically you have to accept all returns if you expect to keep decent feedback. Try to get them to pay return shipping if you are in the right and they don't make too big a deal about it.
That is some solid/sound advices!