Dimdim, a Burlington, MA.-based web meeting services startup, wants to take on Cisco Systems’ (CSCO) WebEx and Microsoft’s (MSFT) Placeware by emphasizing simplicity and ease of use. The company, which is backed by investors including Draper Richards, Index Ventures and Nexus Capital India, launches its service today at DEMOfall 2007. Co-founded by Computer Associates alumni DD Ganguly and Prakash Khot, Dimdim has so far raised $2.5 million. Continue Reading.