The Internet phone company known as Skype has officially filed for a public offering to raise $100 million dollars. Thirty percent of Skype’s stock is owned by eBay, who owned the all of the company until a 2007 sale.

Unfortunately for Skype, Wall Street investors were unwilling to put a value on the company, as it has no presence in any part of the chip market. One Silicon Valley banker said that, “Investors are just skeptical about secular growth coming in any sector of tech.”

Skype is one of the Internet’s best-known consumer services, and the company reached 560 million users by the end of June. However, only 124 million of those members actually use the services Skype provides each month. When that is compared with Facebook, who claims to have 500 million active users, it is clear that Skype still has a way to go in proving that it can generate enough profit to put it among the top public Internet companies.

Experts have been hesitant to put an estimated value on the IPO due to unstable conditions in the tech markets.