File :-(, x, )
Not OP
Now, I hate spiders, and on any other occasion I would smash it without question. But this one on my back porch caught my eye. She was sitting perfectly centered in the middle on the web, when a little moth landed on the upper part of it. She ran up and brought the moth back down and started eating it, and when another landed she pulled that one to the center and started a little pile.. This is the best picture I have, unfortunately the others all turned out blury.
>> Anonymous
     File :-(, x)
A little hard to tell, but that looks like the same kind of spiders I have ALL over my back yard(Record for most seen at one time: 8). They typically don't move at all unless you touch their web, which freaks them the fuck out. I'd leave them alone unless they're in the way of you doing something.

I also get some HUGE garden spiders, and I had a few Tunnel-Web Spiders.
>> Not OP
You have Writing Spiders all over your yard, if the pic is what they are, and thats not what's in my pic. Writing Spiders shake their web like that because they think that maybe a moth or something that doesn't fly in a straight line, and maybe they could catch it if it's still close. Don't kill them, they get rid of bugs in your house and stuff.