On the plus side<p>- The convenience factor is compelling, like auto-complete.<p>- As a v1 you can see the true magic in a seamless signup.<p>On the downside:<p>- It does something unusual &#x2F; unexpected &#x2F; creepy.<p>- It&#x27;s too slow - noticeable lag vs. say the auto-suggest in search.<p>- If accuracy is good why bother exposing that to the user? Intercom.io does this all in the backend off of email only registrations and seems to have about a 70% hit rate. The data is useful to business owner but I&#x27;d bet the user would feel less enthusiastic knowing that I have their personal fb, twitter, linkedin, etc as soon as they register.<p>I am sure that svbtle can show the A&#x2F;B data validating this is worthwhile for THEIR audience.<p>But I&#x27;m not sure for a broader use case this is going to help due to the factors mentioned above.