And so crypto-trade.com?
You can find the major exchanges here:
http://bitcoincharts.com/markets/
So we have Cryptsy, BTC-e, Bitstamp, CampBX, and others not mentioned like vircurex and coinedup. I think vircurex has some BS where they will send you gold bullion in exchange for your coins, so you can check that out, but I doubt you'll get your money's worth, but who knows, as I haven't really looked into it. I think people tend to pay much more than market rates for precious metals.
Also consider the fact that you can SPEND those LTC on real life items, in real life! There are several online merchants that accept LTC. Just google it and find out. There are many more that accept BTC! For example, overstock.com now accepts BTC payments! So why do you want cash when you already HAVE cash!
So just to clarify how my system works:
Mine coins, transfer to an altcoin exchange (in my case, Cryptsy, but I don't recommend that because the price for LTC is quite low there) then transfer BTC to CampBX, exchange for USD, and then deposit in my bank account. 3 days later, I can go to the ATM machine and withdraw USD, or I can use it to buy more crazy heaps of electronics to mine more coins! Yay.
P.S. Also check out this: http://bitcoincharts.com/markets/currency/LTC.html
It seems that LTC are worth a lot more at those exchanges than they are worth elsewhere. Beware of high exchange fees or high withdrawal fees. Also beware of high fees from the likes of Paypal. Paypal corporate executives must be just about the greediest people on the face of the planet.
Feel free if you want to PM (private message) me and I'll be happy to take your LTC, convert them into USD, and wire it to your Canadian bank, or send it to you western union, or express mail you gold bullion, for a modest fee.