I don't worry about people pushing people one way or the other, on any questionable deal there's usually both sides brought to the table. If you allow yourself to be swayed by the squeeky wheel, then that's your problem.
But I'm also not arrogant enough to think that I can't learn something new or find a different perspective by something posted in the coaches corner on a particular deal.
Is 24 hours enough? Depends on the day, sometimes I might log in many times, other days I can barely get to the computer. Its the nature of the game, but if they're giving me days to alter my decision on the HoF, Cy Young, MVP & rookie of the year awards, as well as 24 hours to adjust my FA bids, budgets and initial coaching hires, I'd like the full 24 hours to adjust my approve/veto vote as often as I see fit.