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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8.e5 dxe5 9. fxe5 Qc7
When I was actively playing, 250000 cigarettes ago, the Polugayevsky's fantastic idea of 7. ... b5 effectively took 7. f4 out of practice. What is the current state of the art (at 2000 level preferably)? Did White develop any countermeasure?