Definitely report it stolen to the police and definitely DO NOT go to pawnshops and look for it/warn them about it!!! Sounds counterintuitive But I have a friend who is a pawnbroker and here's how he explained it to me-

In the cops vs. crooks game of stolen merchandise, the pawnbroker plays the part of the goat tied to the tree. Pawnbrokers purchase goods, the serial numbers of those goods are run through a police database. If the SN matches, the goods are confiscated and returned to their rightful owner. If that happens the pawnbroker is out the money they spent on said goods. If you go around to all of the pawnshops and warn them about your stolen 'whatever' those brokers will not buy it when it walks in the door and you won't get it back ever! You stand the best chance of retrieving your tablet if the police know what's up and the pawnbroker is ignorant. Go look for it. But if the pawnbroker asks why, just tell him you're shopping for one.

By all means though, check classifieds, Craig's List, eBay, etc... You could get lucky. If you find it and the SN matches, having a theft report on file will allow you to call the police and have a uniformed officer with you when you confront the thief.

good luck,
kernelpanic

strangely enough I just started a thread on this earlier this morning here. Weird!