We all know about Foursquare's meteoric rise to fame, but here's something that was a bit a shock. According to Compete.com, the number of unique visitors in May dropped by 400,000.
Now I'm sure those numbers will vary between different web analytics services, not to mention the fact that it doesn't take into account actual users or registrations.
But Foursquare might be feeling the pressure, especially looking at their latest move.
The location-based social network sent out window clings to businesses to display in their storefronts, reminding people to check in. The most prominent franchise set to display these window clings is the Whole Foods grocery chain.
I can't say whether or not this latest promotion is a reaction to their drop in numbers, but the timing makes sense. Now we'll just have to wait and see how well this offline move helps the online startup.