Though the overall users bases are substantially different, the rest of the numbers concerning the two services are strikingly similar. What is interesting to note is, as we wrote about a couple of weeks ago, many more people tend to log in to their Facebook account regularly.
A bit of a note to you who might be considering advertising via either of the services — Though fewer people follow brands on Twitter than on Facebook, those who follow on Twitter are nearly 18 percent more likely to purchase something from that brand than those who follow a brand on Facebook.
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