Choosing which image shows when you use Facebook's Send button

I'm trying to add a Like and Send button to me site, but when I click 'send' it randomly picks an image. I've even deleted that image as well as changed that image to the image I want, but it's still displaying the wrong image.

Is there anyway 开发者_JAVA技巧I can choose which image is shown there? I've tried adding the Open Graph Tags to the tag, but again it's still showing the wrong image.

Thanks

You can change it with the open graph tags, but unless you reset the cache on FB's side, it will continue to use the same image as it did.

Facebook scrapes your page every 24 hours to ensure the properties are up to date. The page is also scraped when an admin for the Open Graph page clicks the Like button and when the URL is entered into the Facebook URL Linter. Facebook observes cache headers on your URLs - it will look at "Expires" and "Cache-Control" in order of preference. However, even if you specify a longer time, Facebook will scrape your page every 24 hours.

Facebook URL Linter