Tumblr the next Squidoo?

[adriandg]

What does SEO Moz think of all this SEO abuse that is happening on tumblr lately?  I mean, it doesn't take much time to look around tumbler and realize pretty much every page looks like this:

http://staff.tumblr.com/post/454906416/blackberry-app

Below the post check out the "reblogged".  With the correct settings in your tumblr profile, all you gotta do is click reblog on a couple tumblr pages and you get instant backlinks to your website from tumblr pages.

Some examples from this page:

aticards reblogged this from staff

mymuffincorner reblogged this from staff

contextual-links reblogged this from staff

It's actually a followed link if you reblog. if you just 'like' you end up with a nofollowed link.

Questions:

1. Why is tumblr so blind to allow this to happen

2. Surely google must be aware of this and devaluing links that come from tumblr posts?

Thoughts?

edit: 50 views and no responses. maybe my question isnt clear enough?

[Aeronet]

I checked the url you gave as example, several ot those spammy backlinks were nofollowed, but not all of them...

So there's definitely a choice by tumblr to follow the link or not,

[adriandg]

Like i mentioned in my post.  If you "Reblog" the link is followed. If you "Like", the link is nofollowed.  Tumblr is not randomly no-following certain users, that is not what is happening at all.