A brand new foursquare client based in Qt has just gone live on the Nokia Store and I highly recommend you download it. Its a major improvement over the existing client, complete with photo uploads, notifications, comments, listing venues on maps and so on. It looks great and feels fast.
Search for ‘foursquare’ on the Nokia Store and you should see the client, its still called ‘Foursquare for Symbian’. It might not be as smooth in its operation as 4squick is, but its free.
Hat tip to @Camb078 for the find!