Twitter Has To Prove Its Worth in 2011

Twitter Inc. gained more than 100 million registered members this year and approached the new year with a fresh investment of $200 million.

Now the San Francisco firm must prove it can live up to its newly elevated valuation of $3.7 billion.

So “2011 is the year where they’re going to need to increase their user base pretty dramatically and prove to advertisers that Twitter advertising works,” said Debra Aho Williamson, an analyst with the online research firm eMarketer Inc. “Right now, the advertising is mostly experimental.” Read more at www.sfgate.com