Now what?

Is Quora a hole that Twitter can fill?

A while back, Fred Wilson wrote a post about the Twitter platform inflection point, with a takeaway that “much of the early work on the Twitter Platform has been filling holes in the Twitter product”, and that eventually Twitter would take care of filling those holes rather than on relying other companies to do so (see also: the inevitable showdown between Twitter and Twitter apps).

A lot of the holes that Twitter has filled so far have been minor (with the exception of search), but could they start to take on some bigger opportunities? For example, the Q&A space is red hot right now, with one example being Quora.

After using, and loving the site, I’ve started to come across tweets that I wanted to mark as “follow”, just like I would follow questions on Quora, ie:

“Is there some way to dissociate devices from your iTunes acct that you no longer have access to?”

Quora’s been a valuable service primarily because of the high quality of users it’s attracted. But if Quora’s core asset is its users, how can they make sure those users don’t start spending their time and contributing content elsewhere?