We're not necessarily just talking about spontaneous photographs, although those are definitely nicer than the stiff, posed pictures that so many couples take. A candid photographer is someone who deals with you openly, honestly and naturally - we mean really gets to know you, and therefore is capable of taking some highly personal shots.
In slightly simpler terms, Racked Chicago recommends that you "hire a 'friendly' photographer...don't be afraid to ask around to see if you have any friends who are really good with a camera. Chances are, someone will take the pics for free or a reasonable price."
Even if there are no budding professionals among your nearest and dearest, taking the time to research a photographer is well worth it in the end - especially if you intend to shell out some major bucks. Browse their portfolios and don't stop until you arrive at someone who has just the right aesthetic sensibility and intimate relationship with his or her subjects.
Another way you can cut a few corners is to take it into your own hands to put together an album. Many professionals charge hundreds of dollars to organize your photos for you, but you can save money and have fun building your own personalized photo guest book filled with all the warm, happy wishes from your big day.