At least, that was the case for running back LaVance Taylor, who tweeted his highlight reel to the Kansas City Chiefs. Taylor was an undrafted free agent out of Central Missouri:
https://twitter.com/LaVance_TCT/status/626521209090379776
Lo and behold, the highlight reel worked (we think). Taylor was picked up by the Chiefs the following day:
The #Chiefs have signed LaVance Taylor, RB, Central Missouri.
— Kansas City Chiefs (@Chiefs) July 31, 2015
(Via Bleacher Report)