one question: where is the nelisquare cache folder located?

one report: after pressing check-in here, it appears the alert..nice check-in etc...along with a line showing the popular tip of the place, but there is a blank space instead of the tip, like (Popular tip: )

same behaviour if a friend of mine already added a tip for that venue, it shows a line that notify me that a friend left a tip, but a blank space instead of the comment, like (Sahara said: )

btw i can read the comment, in the tips list of the venue

ps: the badges list is marvellous.