As always, when two technologies are battling, the one porn picks will win.
As always, when two technologies are battling, the one porn picks will win.
I think tumblr was easier for people to post stupid pictures of cats and porn. The friction to entry was lower IMHO.
Edit: Just thinking about the business of porn, this is probably a decent heuristic for simplicity and cost effectiveness. Porn is usually very low budget (compared to other mass market media), with a very high volume of consumers. From my experience in non-profit oceanographic research, nothing focuses an engineering effort like trying to succeed on a shoestring budget (wow, I never thought that'd compare to working in the porn industry).
For better or worse, FB could be a good example of "platform success" that partially relies on that. It's not porn per se, just beach/bikini photos of one's lady-friends, or his work-mates, or the wife's friends.
http://history.tamu.edu/faculty/coopersmith/coopersmith%20pe...
Of course, the issue with Tumblr is the make some money off it part, but Yahoo is from the '90s, so they know not to expect to make money off things.