with Facebook, Twitter and Pinterest effectively all using infinite scroll I have wondered how much that feature alone is a contributor of their engagement in the same way "related videos" were to YouTube in the playing viewport of embedded videos. It's unlikely that Google will defer to infinite scroll, at least while Marissa Meyer comments are considered: See http://www.quora.com/Will-Google-introduce-infinite-scrolling-to-its-main-web-search

Hi Valeria, I speculated about this very point: why Apps Users are delayed from Google Plus. I think it is down to risk management from Google. And as much as I am personally frustrated I understand their caution. http://qr.ae/71ryp

I admit I'm a little flummoxed at it's value when as Tomas says you can segment or list your other networks for discrete groups. To combat social network fatigue new outfits have to really make the benefit super OBVIOUS for users to migrate/join, and Path FAILS at answering that nagging question "Why should I bother?" It doesn´t do it pre sign up and I've signed up and it doesn´t do that after sign up. I don't think it's enough just expect early adopters to do their advocacy and go there just because the in crowd do.

People's review/comment fatigue sets in at different levels. most people don't even bother. look, right now this post has according to backtweets: http://backtweets.com/search?q=http://babblingvc.typepad.com/pjozefak/2010/11/im-tired-of-creating-your-content.html been RTweeted 38 times and only 1 commentor did it here on your blog to engage on your blog. Effective marketers are those that sufficiently identify and reward those willing to exchange personal data or arguably time and knowledge. It's happening with some big brands but it is a slow burn. I suppose in some cases the personalisation that comes with your interaction of the site carries an implicit reward, so the more you contribute/interact with a say Amazon, the better your future experience of browsing their store, right?

Simple plain text emails to lapsed users with a single discrete text link and a bit of an an anti-marketing spin works suprsingly well to elicit a positive response when compared to heavily composed HTML emails. Maybe it´s because it paradoxically distinguishes you from the pack and it doesn´t invoke scary image block message from your email software. Also the donotreply@ from addresses seem to be a put off. My last campaign used a ofcourseyoucanreply@ as the from address as an antidote in this social age.