Yep, I have to agree. There's always room for one more. If you already have several dogs, who's gonna notice just one more? Besides, if you have the room and the means by which to give him a great home, you could be saving him from a worse fate.
*But if you do decide to get him, just be very careful meeting these people. There have been a lot of bad things happen to people by meeting craigslist sellers. Be safe and meet in a neutral location and don't go alone.