deltathree had a rough year in 2009. The 1Q2010 financials were announced here. Here's the highlight:
"For the first quarter of 2010, deltathree reported total revenues of $3.1 million compared with $5.3 million reported for the first quarter of 2009. The year-over-year decline in quarterly revenue was primarily related to the suspension of the operations of deltathree's largest reseller customer in the fourth quarter of 2009 as well as higher levels of revenue from service provider customers in the first quarter of 2009."