Spiders ID

hey guys just want to know what i can about these spiders in particular if any are dangerous so i know what im dealing with thanks guys.

this one: https://s307.photobucket.com/albums/nn303/Umarkirk/?action=view&current=P1010060.jpg

and this one (sorry bad photo, didnt want to disturb her) : https://s307.photobucket.com/albums/nn303/Umarkirk/?action=view&current=P1010046.jpg

this one : https://s307.photobucket.com/albums/nn303/Umarkirk/th_P1010033.jpg

and finally this one : https://s307.photobucket.com/albums/nn303/Umarkirk/th_P1010070.jpg

The first one looks like a Latrodectus sp. (some sort of widow), so I wouldn't want to get bitten by her.

No ideas about the others.

yeah, the first one looks dangerous.