Twitter To File For IPO By Year End [REPORT]

According to reports Twitter is likely to file for its initial public offering by the end of this year. Mike Isaacs over at AllThingsD says that numerous sources familiar with the matter expect the company to file its S-1, the first official step on the road to an IPO, by the end of 2013. The company is expected to go public in 2014.

Twitter's valuation is difficult to enumerate, simply because it has not gone public yet. The best metric for valuing the company is the price that private investors have...