C-blocks and linking

[EricVallee34]

I'm just starting to learn about cblock root domains and linking.  I'm wondering about the following:

• Are there articles or websites to learn about dos and don'ts about getting a large number of links from one cblock?

• How do I know when a site has too many links versus the number of unique cblocks?

• I've been using Link Harvester on SEO Book and it seems like not many sites have more than 170 unique cblocks.  Is this the total number of unique cblocks on the web or am I using the tool wrong?

[AdamThompson]

"How do I know when a site has too many links versus the number of unique cblocks?"
There is no set number or formula. You want your links to be as diverse as possible, and C-class IP blocks is one metric that matters.

"Is this the total number of unique cblocks on the web or am I using the tool wrong?"

There are many more than that. Not familiar with the tool, but it may be a limitation of the tool. It looks like it uses Yahoo backlink data, which is limited to 1,000 links.