B.o.B.'s big single off his album "Strange Clouds" has surpassed the 500,000 mark in sales.

B.o.B.'s single with country/pop star Taylor Swift, "Both Of Us," has just gone gold.

The track has moved more than the required 500,000 units, having sold 551,607 copies to date. The single appeared on B.o.B.'s album Strange Clouds, which is out now.

Congrats!

[via]