For all you poor, unemployed, recession victims and/or cheap bastards, here will be your resource for all that is cheap or free in the Chicago area.

Posts for general categories (food/restaurants, retail, entertainment, etc.) will be continually updated under their respective posts. So even if it was posted 3 months ago, the information should be current if it's anything permanent.
Special events/promotions will have their own posts.

Of course, any tips you have that I may not have here are not only encouraged, but necessary to make this list complete! Please feel free to leave it in a comment.