Does PA matter much on blogs like tumblr, wordpress.com?

[joemas99]

I've been exploring setting up pages on these type of sites. When searching for key words I've discovered the following...

If a sites DA id let's say 83, the root domain you create is also an 83 (not 100% but most I've looked at)

The PA starts at 1, but there seem to be a lot of these blog sites that rank for my key word searches even though the PA is a 1.

So...

I was wondering the value of attempting the get the PA of mine greater than one with back links.  The blog page will link to the corresponding page on my main site.

Is it worth the time, or PA in this case is not really much of a ranking factor in creating link juice? What I'm asking is that will a page on let's say joemastriano.blogspot.com/ (whatever) get more link juice to the page i link it to if the PA was 25 and not 1?

[joemas99]

I'm beginning to agree with you, I have acquired many links in the past that carry little weight in the metrics. Then I did a lot of comments on do follow related newspapers like WSJ and Huffington post, and my DA took a nice boast from all the new decent root domains connecting to my site.

[RyanPurkey]

Short answer, yes.  The more PA a page has, the more link juice it can distribute. Here's a comment and blog post from Rob Ousbey from that helps explain it (2009): http://www.seomoz.org/blog/using-small-website-to-create-a-bigger-impact

"I think that domain diversity has been more important of late, which implies that links from two domain are better than one link that is superficially twice as strong. Of course, we must remember that mozRank and PageRank do both work on an exponential scale with base about 8 - 10. Also, that the number of links on a page affects the strength passed."