Moving rapidly into this new century today, I finally dumped Times Roman (1931) and Arial (ex-Helvetica, 1957) in favor of Adagio ($18 for the font family, from Mighty Deals at http://www.mightydeals.com/deal/adag...torsmediabistr ) ... and yes, it displays very well on the small smartphone screens. Great for web ads and flyers.

But what's going on these days for books? Any recommendations for e-books sold as PDFs... where printing is pushed onto the customer... and where reading onscreen might be primary?

Or, what would you recommend for a printed book? I've used Times New Roman in the past, since... in the past, everyone was so unconsciously familiar with it that the reader never noticed the typeface. But hey, Times goes back to 1931. Is there a generally-agreed-on modern substitute... a serif face... also 'transparent' to the reader?

Thanks for any advice in advance, Jon