I Found 3 Good Chrome Extensons:

facebook-invite-them-all"

Code:

https://chrome.google.com/webstore/detail/facebook-invite-them-all/jladghljinmlokelojmdmblikkifabea

facebook-new-group-invite:

Code:

https://chrome.google.com/webstore/detail/facebook-new-group-invite/dhhemdhonhlkaoadhbgdnogknjnagplg

email Grabber:

Code:

https://chrome.google.com/webstore/detail/email-grabber/fonocbnoaimnddelolieamcggchcpcng

Bonus:

Autofill - automatic form filler

Code:

http://chromespot.com/forum/google-chrome-plugins-released/5234-autofill-automatic-form-filler.html

Free Email Extractor:
[video][You must be registered and logged in to see this link.]

Code:

www.softpedia.com/get/Internet/E-mail/Mail-Utilities/Annunciefree-com-Email-Extractor.shtml