Numbers, visits, UAV's, who is leading what?

Its more topical than ever right now, is Facebook on the way down, has Google + cracked the code and migrating users not unlike what Facebook did to MySpace?

Rather reading every second article that has appeared in the last week on who has the upper hand I went looking for some user stats to offer some clarity to the changing landscape…

According to figures compiled by website socialmedianews.com.au from Google Ad Planner and checkfacebook.com more than ten million Australians visited Facebook, while the number of people visiting the Google-owned YouTube fell by 100,000.

Facebook remains the most popular social media website with 10.4m unique Australian Visitors (UAVs) last month.

YouTube attracted 9.8 million UAVs, down 100,000 on the previous month, Blogging platform Tumblr increased its number of unique Australian visitors in July to 1.5 million a rise of 600,000.

StumbleUpon has overtaken Digg as the most popular book-marking site. 

Does the Social Media PR machine do a better job of migrating users than the actual sites themselves? Or is that Social Media sites understand the power of pop culture and can harness it better than ever before?

Number of Unique Australian Visitors
1. Facebook – 10,436,860
2. YouTube – 9.8 million (down 100,000 on June 2011)
3. Blogspot – 4.6 million (down 1,000,000)
4. WordPress.com – 2.1 million (down 200,000)
5. LinkedIn – 2 million (steady)
6. Twitter – 1.9 million (steady)
7. Flickr – 1.5 million (steady)
8. Tumblr – 1.5 million (up 600,000)
9. MySpace – 930,000 (down 70,000)
10. StumbleUpon – 150,000 (steady)
11. Digg – 140,000 (down 20,000)
12. Reddit – 100,000 (steady)
13. Foursquare 63,000 (steady)*
14. Delicious – 59,000 (down 17,000)
15. Gowalla – no data, May 2011 was 9,500*