Today’s funding and acquisitions news roundup from across the web:
Social Media
Social Stream Reader Threadsy Raises $3 Million In Series B Funding (via TechCrunch)
CitySocialising Raises £1 Million In Series A Round Led By PROfounders Capital (via TechCrunch)
Enterprise Computing
Help desk provider Zendesk raises $19M in what may be a final round of fundraising (via DealsBeat)