As a fan of the music of both Justin and 50, I was amazed when I first heard this single. Hearing it more on the radio, it grew on me even more. 50's flow is at its best and for once he doesn't overawe his collaborators: the feel of this single is that it is Justin and Timbaland's just as much as 50's.
I really wanted to give this 5 stars. It's just that I feel: (1) Akon and Eminem already covered the same ideas as well, if not better, with "Smack That"; (2) the extra track "I Get Money" is terrible and does not encourage me to buy the album "Curtis" one little bit.
So overall, this is well worth buying for "Ayo Technology" and if you liked hearing this song on the radio, this is a must have; but the single is not a good advert for "Curtis".