[quotecf95d53d8b="dmorris68"]That looks like an ordinary house spider to me, not a wolf spider. A wolf spider has a much thicker abdomen and is quite hairy.
Those house spiders are extremely common and totally harmless (to humans).[/quotecf95d53d8b]
Well, it depends in part on where you live, but I find the most common is actually the kind you'll find in corners and ceilings. (At least in the big cities)
However, there is a second most common (in my experience) type of spider that looks quite a bit like the first picture, that I happen to find on the floor occasionally. It's just a bit bigger that the standard house spider you find in a ceiling corner.
It's rather small, and only walks around on the floor. It builds web cocoons, but no webs to catch anything, and runs very fast when discovered. The thing is, they get no bigger. Some of the others mentioned here [icf95d53d8b]do[/icf95d53d8b] get bigger, so it can't be a wolf etc.
[quotecf95d53d8b="JennyWren"]That does look like a wolf spider. What most people think of as a wolf spider is actually a hobo spider

http//www.nps.gov/public_health/inter/graphics/hobo_female.jpg[" alt=""/imgcf95d53d8b]
This being your generic hairy brown house spider. These can actually give you a very nasty bite which festers.[/quotecf95d53d8b]
That's bigger than what I was thinking of, and the OP's picture looks like it too. It would be nice if he could get a coin in there for scale, but what can you do? ;)
[quotecf95d53d8b="JennyWren"]My policy - small spiders I pick up and put outside. Big spiders I get the cup 'n' paper and put them outside. I don't mind spiders, but I hate moths (ew, all fluttery leaving mothdust everywhere yuk) so I let the spiders go to eat the moths.[/quotecf95d53d8b]
Spiders = vicious predators.
Moths = vegetarians, and protectors of miniature twin girls. ;)