Moz Page Authority is a separate metric. Sadly, we have no pipeline from Google where they tell us exactly what they think of a site. We update our metrics about every month, so it may take a couple of months to see authority changed to a new page in Moz.

I was searching on freedownloadhub linkexchange and happened across this thread. It look like the site has taken down all of the link exchange pages. They still return a 200 (found) response code, but have the following text:

Link Exchange Update

Due to changes in Google's ranking rules this service has become outdated. Due to a number of requests to de-list URLs, we have decided to end this service.

I'm glad you'll be joining us dmac!

Ryan, I've now gotten a couple of weird looks here in the library as I giggled at my computer.

I stayed at the Mayflower Park Hotel for SMX Advanced for $180 a night plus tax, and had a great stay. http://www.mayflowerpark.com/

I'd focus all of your efforts on one site, and make that site be the authority for your particular field. You'll have only one site to maintain, one site that gets authority from people linking to your content, one business name to maintain, etc.

Also, be sure to read Craigslist's terms and conditions for frequency of posting, and where you can post pets. If people think you are a puppy mill, you're likely to have your ads quickly flagged.

No, there isn't. So sorry!

Moz doesn't have quite the number of servers that Google does (or even Bing), so we are not able to crawl as deeply into as many sites. If we crawled all of a site like YouTube, Twitter, or Facebook, we wouldn't be able to crawl anything else at all. It's likely that your links just don't have enough authority at the moment to be picked up. The important part is that Google should know they are there.