How much is Foursquare, the location-based social networking site, really worth? It's a question investors are currently faced with as the three-year-old company attempts to raise money.

Before Facebook's ugly public offering, Foursquare was valued at 760 million. But with Zuckerberg's faltering IPO, investors are growing increasingly more weary of young start-ups like Foursquare, who is "having a hard time convincing investors that it is worth that much money as it looks to raise around $50 million."

Foursquare's dwindling valuation, however, speaks to the larger problem: investors trepidation to invest in burgeoning tech companies. Is this a sign of the times?

[via The Wall Street Journal]