Not so silly actually.
For Offense: You get 162 games for each position to count stats. 162 just happens to be the same # of games each team plays, but it's highly unlikely that many players will play all 162 games, so it's good to plug in some guys on the off days of your starters once in a while to make certian that you take full advantage of all 162 games. Any games played over 162 won't be counted towards your stat total. There is a link on Yahoo on the bottom of your team page called "Maximum Games and Innings" to track your pace.
For Pitching: You have 1500 total innings to accumulate stats. It's a generally accepted practice to keep closers in the RP slots at all times, and rotate your other pitching spots between starters and middle relievers to maximize your total innings. I usually check daily, but you can set your pitching a few days in advance because Yahoo will put a ^ next to any starter that is expected to play on that particular day. Again, just follow the pace using the Maximum innings link. I think 250 innings a month is the right average.
