It's mentioned in the article though not really on topic but...any idea why Chrome has been losing users for 3 months in a row? Where are they going to? Firefox? Why? What is Chrome doing wrong/others doing right?
1) I use tree-style tabs (tabs arranged in a column at the left) in Firefox since I usually have 10-some tabs open. Chrome used to have this but they disabled it, and no extensions for this work.
2) Firefox uses less memory (older versions of FF used to be notorious for leakage, but the benchmarks I looked at showed Firefox outperformed Chrome in memory usage).
Granted, Chrome probably has slightly faster page loading.
Adblock works with ff better also.
I use Opera as secondery browser.