Unfortuantely the feat is not written properly. This is copied from the Wizards boards. The person is not me but whomever wrote it:
Person: Here's a clarification from the Sage I got in an email:
Person: 5. I found Quicker Than the Eye confusing. Do you get an actual extra partial action granted to you if *any* foe (even 1 out of 20 goblins) fails
the Spot check?
Sage: No. Creatures that fail their spot checks just don't see what you're doing for the rest of the round.
Comment:I never brought up Haste, so do not assume his comment means that this includes the extra action you get from Haste. He simply answered my question.
Person: 6. Or, is this feat meant to just allow you to make one attack after
bluffing in the same round?
Sage: No, you can do just about anything after the bluff.
Person: 7. For instance, can these moves be done:
Person: a) make a melee attack, bluff, and attack again if successful (failed checks lose dex bonus)?
Sage: No.
Person: b) bluff, move 30', and attack if successful (failed checks lose dex bonus)?
Sage: No.
Person: c) bluff, attack (or drink potion, move, etc.) if successful (failed checks lose dex bonus)?
Sage: Yes.
Person: 8. If everyone makes their Spot checks, the rogue could still take a partial action, but everyone retains their dex bonus...is this correct?
Sage: Yes (or everyone sees whatever it is that you're doing for the rest of the round).
Person: 9. If not, a failed bluff results in no further action in the round (assuming no Haste)...is this right?
Sage: No, see previous answer.
Skip Williams
RPG R&D