Just to keep it simple: What rankings of mathematical conferences and journals are available in the internet? (I'm only interested in rankings, not about any discussion about rankings.)

The Australian Mathematical Society have produced a ranking: http://www.austms.org.au/Rankings/0101_AustMS_final_ranked.html It is widely used (for instance, by my own institution in the UK). When choosing where to submit I also make use of the following ranking of journal prices/ value: http://www.mathematik.unibielefeld.de/~rehmann/BIB/AMS/Price_per_Volume.html Of course it's a different type of ranking, but you might argue that it's a lot less subjective! 


There is the Report of the IMU/ICIAM Working Group on Journal Ranking (June 2011), and the IMU blog on mathematical journals, discussing exactly these questions, and giving lists of such rankings. 


I myself am not very fun of rankings. But when the Library of my University decided to cut down some of the journal subscriptions (due to the budget crisis in the Eurozone), I gave my personal viewpoint by means of creating a unbiased ranking of Mathematical Journals. Mainly what I wanted to measure was the impact of the Maths published by each Journal throughout its life on today's Math. I took the raw data from MathSciNet. The result can be consulted in the web page of the society journal of the Spanish Math Society (the "Gaceta de la Real Sociedad Matematica Española"): http://gaceta.rsme.es/adicional.php?id=1215 and also in my personal web page: http://personal.us.es/arias/V17N3_439.pdf The paper, where I explain the procedure devised for creating the ranking my procedure, is in Spanish, but at the end you can find the ranking, which is easily understood. My ranking treats on the same footing all journals in applied, pure and statistical math. 


You can also check out http://zbmath.org/journals/ for details on the journal content. It doesn't give you a ranking though but you see at a glance, who published in the journal you are interested in or what topics are represented in the articles. 

