Twitter celebrated a midsummer 5th birthday on Friday, without a well defined monetization plan or any lack of competitive challenges from forces like Google. Twitter marked the day by Tweeting impressive usage numbers but had a more difficult time explaining how they would add up for long term profitability.
Twitter CEO Dick Costolo did mention some new commerce possibilities and the ability to reduce sales friction as an area that they are looking at. The pressure is on as Twitter is currently working on a new round of funding based on a possible valuation of $7 billion.
Even the famed Twitter real time fire hose for search results is going through uncertain times. Google closed its hydrant (at least temporarily) a few weeks back when Google+ launched and now Bing seems to be reevaluating the relationship as real time alternatives emerge.