Sydney, Australia - Tilefile, an Australia-based online social network, announced on Thursday that it has received an equity investment from Motorola Ventures.

Schaumburg, Ill. - Motorola Ventures announced on Wednesday that it has made an equity investment in Siimpel Corporation, a developer and manufacturer of chips used in mobile imaging applications.

Schaumberg, Ill. - Motorola Ventures announced on Tuesday that it has made an undisclosed investment in Vocel, a San Diego-based developer of mobile "push" marketing technology.

Schaumberg, Ill. - Motorola Ventures announced on Tuesday that it has made an equity investment in GoTV Networks, a provider of made-for-mobile TV programming.

Schaumberg, Ill. - Motorola announced on Tuesday that its Motorola Ventures unit has invested an undisclosed sum in Amimon, a developer of chips used in wireless transmission of high-definition video.

Palm Desert, Calif. - DARTdevices, a developer of connectivity software for consumer electronics devices, announced that it has received an undisclosed investment from Motorola Ventures while introducing its technology at the DEMO 07 event in Palm Desert, Calif.