Wow, thought this was taken care of already.
A few weeks ago, some people were complaining about the same thing. A Riot poster then came in and said that it was a practice game.
As a practice game, it had a -50% IP penalty, and then if you add in the lack of a matchmaking bonus, you'd actually get around 50-60 IP for a 20-25 minute Dominion game. Figuring you get around 100 for a 40-50 minute Summoner's Rift game, I'd say that the rates are really close to the same, if not better.
and about this:
Originally Posted by BloodGod22
Why play this map when you can get more just by playing bot games?
If IP is your only reason for playing the game, then why DON'T you just go play bot matches?