Back when I used to QA emails, I'd check Google, Hotmail, Yahoo!, and Aol. in the various browsers. I listed them in that order for a reason -- Gmail was the c

Back when I used to QA emails, I'd check Google, Hotmail, Yahoo!, and Aol. in the various browsers. I listed them in that order for a reason -- Gmail was the cleanest and the most usable, while the Aol. web client was half ads and irrelevant columns, requiring you to click on the inbox to even read email, and displaying some of the most ridiculous bottom-of-the-barrel flashy ads that you can get before you end up seeing Adult Friend Finder or penis extension animations. If ad quality is directly related to how much the host website needs the revenue and/or how valuable the clicks are, it's clear which company is doing the best online.