How To Block Spammers From Your Facebook Page

Here are a few tips on blocking spammers from your Facebook Page.

Make a note of the web address of the SPAM site

Hover over the spam, click on the arrow to the right of it, Mark As Spam.
Then, click on the arrow again and choose Delete. Choose Delete and Ban User.

Up at the top, click on Edit Page, Manage Permissions.
Go down to Moderate Permissions
Type in the core of the address you took note of earlier (example: address.com), and, Save Changes.
Now, anyone (from any Facebook account) trying to spam you with that site will not be able to.

The above info is from this brief video by Mike Mueller.

How to post links to your blog on blogspot dot ca on Facebook

As of May 27, 2012, Facebook blocked all links and text referring to blogspot dot ca (written out here as dot ca instead of ".ca" so it won't be blocked when posted to FB).
I am assuming they blocked this due to a number of complaints about SPAM sites using Blogger in Canada.
However, this blanket blocking of Blogger sites from Canada is unfair to the thousands of legitimate bloggers in Canada who use Blogger. 

SOLUTION
For now, here is a workaround:
To post a link, first, copy the link to notepad, then replace .ca with .com in the URL. Now, copy and paste this edited version of the URL to Facebook. The link will direct to the correct location. 

Please write to Facebook and ask them to stop blocking all of Blogger in Canada. If they have complaints of specific blogs in Canada, they should block those specific URLs, not the core URL.


UPDATE
As of a couple of days ago, Facebook unblocked blogspot.ca
  

How to Stop Spam on Facebook

How to Stop Spam on Facebook - Scameo
Here are instructions on how to deal with and help stop Spam on Facebook.
The first step when you see Spam posted on your wall:
Hover at the top right of this post. An X mark will appear. Click this x mark to remove the post or report as spam.

Read the link for further details.

Major SPAM provider shut down

Spam drops 75% as major host shut down - Security - Technology - smh.com.au

Hopefully this will result in an actual reduction in SPAM