Just my $0.02, but I don't read any forums (that don't have their own dedicated apps like Reddit) on my phone unless they have Tapatalk or the Invision app enabled. From a user's perspective, having a single, consistent mobile interface across forums that permits easy switching is very desirable. Especially when I don't get logged out when I shut down the browser (as can happen in Safari). This is why I don't use Tax Almanac as often as I could, lack of a good mobile interface.
-Brian
Director of Tax Accounting Methods & Credits
SourceAdvisors.com
Opinions my own.