Things I like about Robinson from the highlight video:
1. Top end speed. Don't recall him getting caught from behind on any of the plays in the video.
2. Ability to get separation. Has the quickness and moves to get open.
3. Good hands. Although highlight videos never include drops for WRs, it appears that he has good hands and technique - strives to get both hands on the ball.
4. Foot technique on the sideline. Demonstrates nice ability to get his feet down.
Thing that I'm unsure about:
1. All of the highlights are against Big 12 defenses, which as we know, is a bit of an oxymoron.

Seriously, Big 12 defenses have been almost universally porous compared to their Big Ten and SEC counterparts over the past several years. So it's difficult to say how well his performance will translate when facing the much tougher defenses that he will face next season in the Big Ten.
I am cautiously optimistic that he will prove to be a good addition to our team.