Rockfish joins angel investors Bullet Time Ventures, i2A Fund and Hyde Park Angels, which provided more than $1m to Tap.me in January.

Buddy Media, a US-based social media marketing company backed by advertising group WPP, has bought peer Spinback, which helps retailers track the return on investment for their social media efforts.

Quikr has raised about $19m since it launched with the latest round led by led by Nokia Growth Partners.

Alongside Comcast Interactive Capital in the $20m C round for JiWire were venture capital firms Trident Capital, which led the round, and DFJ Frontier, Norwest Venture Partners and Panorama Capital.

Last month, in a regulatory filing, JumpTap said it had raised $20m but the repeat investors in the latest $25m round include ad services group WPP.

Footballer Ronaldo and WPP own 45% of his new company with business partner Marcus Buaiz the remainder, according to news provider Financial Times (FT).

Alongside Positron in backing MConcierge Systems were venture capital firms Real Ventures, Montreal Start Up and Palos Capital.

BlueRun also participated in 140's first $2m round, which also included angel investors.

Venture capital firm Northgate Capital, which is majority funded by India-based industrial conglomerate Religare Enterprises, had led Visible's $10m series C round in March 2009, which included peers General Catalyst and Mohr Davidow Ventures.

Alongside Intel Capital in the round was venture capital firm Meritage Funds and Singapore state-backed fund EDB Investments (EDBI).