How do I add a Facebook button to my Google site?

FAQ

I had a Facebook Like button, but it doesn't work anymore. There's an error when I try to use it. What's wrong?

The Like button functionality recently changed, so if you had previously added a Facebook button that worked, it might not work as expected anymore. 

You can add a

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Get Code from AddThis

1. Sign in to Addthis.com
2. Click Tools (top left)
3. Click Add New Tool
4. Select Share Buttons
5. Select Floating then click Continue
6. Adjust customizations as desired. Either use the Smart Sorting by AddThis (and the buttons your visitors most often use will show) or click Selected by You to specify which share button(s) to show and in which order. If you choose Selected by You, click ADD MORE SERVICES to add more/others (e.g., LinkedIn, Amazon, Box, Digg, Evernote, etc.) or click and drag the existing service to re-order them
7. Click Activate Tool
8. Click Get The Code (top right)
9. Under My Site is, select An HTML Website
10. Under Just Copy... click the + button to copy the code snippet
11. Continue below to add the code to a Google Sites Page ↓

Add AddThis Code to New Google Sites page

1. On the New Google Sites page where you want the button, on the right, click Insert and then <> Embed
2. In the Embed from the web box, click Embed code. Then paste the code (copied from AddThis) into the box and click Next
3. You'll see a preview of the AddThis buttons. Click Insert

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Add AddThis Code to Classic Google Sites Page

1. On the Classic Google Sites page where you want the button, place your cursor where you'd like the buttons to appear (near the top of the page, perhaps)
2. Click Insert and then click HTML Box
3. Paste the code copied from AddThis in the box, uncheck Scrollable, change height to 50 (pixels). Click Save
4. Select Save for the HTML Box and then save for the page to view your changes

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View Analytics

1. Go to www.addthis.com
2. Sign in
3. Click on Analytics