Tumblr blogging site back up after massive outage

The popular blogging site Tumblr is recovering from an outage that had left it out of service for about 24 hours.

Tumblr says the problem was in one of its database clusters, or collection of databases. On Twitter, the company says the databases are up and running. Tumblr says it is slowly opening up access to people's blogs and monitoring site performance.

New York-based Tumblr lets users post photos, text, videos and other content in short updates. It bills itself "the easiest way to blog," though on Monday morning that wasn't the case.

While both Facebook and Twitter have suffered big outages in recent years, the length of Tumblr's problem is unusual.

Twitter users complained about the outage in English, Spanish and Japanese among other languages.

Top 25 seo blog

The Top 25 SEO Blogs list, instead, ranks the blogs according to their Google Pagerank, Alexa rank, number of Bloglines subscribers and Technorati authority. Each factor has a score from 0 to 10, and the maximum score for each blog is 40. Details about the algorithm can be found below the table.

#1	Search Engine Land	7	10	9	10	36
#2	SEOBook	6	10	10	10	36
#3	SEO Moz	5	10	10	10	35
#4	Matt Cutts	7	10	8	10	35
#5	Search Engine Watch	7	10	10	7	34
#6	Search Engine Roundtable	7	10	8	8	33
#7	Search Engine Journal	7	8	9	8	32
#8	Online Marketing Blog	6	7	7	10	30
#9	Pronet Advertising	7	7	5	10	29
#10	Marketing Pilgrim	7	8	6	8	29
#11	SEO Chat	6	10	4	6	26
#12	Search Engine Guide	7	8	4	6	25
#13	SEO Blackhat	6	8	6	5	25
#14	Stuntdubl	6	6	6	6	24
#15	Graywolf’s SEO	6	7	4	7	24
#16	SEO by the SEA	6	4	5	5	20
#17	Link Building Blog	5	5	5	4	19
#18	Jim Boykin	5	6	4	4	19
#19	SEOpedia	6	5	4	4	19
#20	DaveN	6	5	4	4	19
#21	Bruce Clay	5	7	3	3	18
#22	Blue Hat SEO	4	6	3	4	17
#23	Tropical SEO	5	5	3	4	17
#24	SEO Refugee	5	6	1	3	15
#25	Small Business SEM	5	4	3	3	15

Blogs considered: the list considers only blogs that have a high percentage of SEO-related content. Topics might range from SEO news coverage to general SEO discussion and link building.

Google Pagerank (0 to 10): the actual Pagerank was used on the algorithm.

Alexa Rank (0 to 10): Ranges were determined based on the Alexa Rank (i.e., 100k and up, 80k-100k, 60k-80k, 40k-60k) and each range was assigned a number (1 to 10).

Bloglines Subscribers (0 to 10): Subscriber ranges were determined (i.e., 1-50, 50-100, 100-150, 150-300) and each range was assigned a number (1 to 10).

Technorati Authority (0 to 10): Ranges were determined based on Technorati’s Authority rank (i.e., 1-125, 125-250, 500-750,750-1000) and each range was assigned a number (1 to 10)..