There comes a time in every Web-based resource's life when it either becomes useful or it doesn't. I think the menu site, menupages.com, is reaching the point where it is a genuine resource.
I have used the site's NYC search with good success before, but always considered the Chicago options thin. It seems they are now getting good participation from many corners of the city, yeilding some nice ReneG-reads-the-Yellowpages type results.
As an experiment, I looked at possibly the most enigmatic and intimidating restaurant in Chicago, the ominously named Chicago by Night. CBN is a Bulgarian place featuring hot cocktail waitresses and icy stares from the Bulgarian dudes that hang around the tavern, smoking and eating. I was drawn there a year or two ago based on a crazy-ass leaflet left in a cab that I happened to hail. The glossy half-sheet looked like something you'd step on in Vegas and portrayed an extremely happy-looking (in a way) place.
I have, essentially, no sense and no fear when it comes to public dining establishements, and who should, really. But this place tested my limits. The stares of patrons combined with my apparent invisibility to the staff sent me back to the street a few minutes later. Now, with the help of menupages, I can draw back the curtain on the truly massive and quite interesting combination of Bulgarian, Turkish, Polish and American bar food at Chicago by Night. They have your offal, for sure.
Possibly the best feature? Use the food search function, enter "Shkembe Chorba" for the Northwest Side, and you get a hit on CBN!
Throw in "Shakshuka" under North Side and you'll get Tel Aviv Kosher Pizza (which, by the way, has a huge non-pizza menu).
Anyway, this will help, no doubt, as we look for particular foods.
PS, don't be fooled by the completely inadequate listing of places by ethnicity. menupages shows a scant handful of Indian or Pakistani places, but if you do a food search for "frontier," for example, just about every cabbie-kebab place (on Devon, but not Orleans) pops up.