With Twitter's current state and Google's moves to kill their social side, this is unlikely. Why buy a moderate sized social network when you just killed your similarly sized social network?
If you're referring to G+, I don't think G+ was a "moderate sized social network" any more than twitter (although in opposite directions).
Also, imo, calling them "similarly sized" would be incorrect, except perhaps in signed up users (from which google got a ton from the "login with google and your account is already setup", not daily active users)
Don’t forget that they ran logins and notifications for everything through the Google+ interface and did things to juice the numbers like uncontrollable push notifications every time someone you’d ever exchanged email with joined (hi random person who bought a bookcase on Craigslist!).
The G+ numbers looked suspicious if you ran any sort of public website, where e.g. I saw metrics for referrals or shares at least an order of magnitude lower than Facebook or Twitter.
The Wikipedia article goes on to talk about G+'s very low engagement. I wouldn't be surprised if Twitter's engagement rates were somewhere near Facebook's.
> User engagement on Google+ was low compared with its competitors; ComScore estimated that users averaged just 3.3 minutes on the site in January 2012, versus 7.5 hours for Facebook.[22][23]
Indeed, and high DAUs doesn't translate to a high number of engaged users either. Just a 301 HTTP redirect through a domain as part of a chain can count as DAU and mean nothing.
yeah i visited g+ primarily for the active dev communities oriented around google products. def just once or twice a week and the activity on those "circles" was pretty slow
Slow growth/lack of user traction was what caused Google to pull the plug. Its a similar overarching problem to Twitter, but more of users being disinterested than actively repulsed due to the content the most popular users of said service post...
Also, imo, calling them "similarly sized" would be incorrect, except perhaps in signed up users (from which google got a ton from the "login with google and your account is already setup", not daily active users)