Yahoo!’s recent acquisition of Dialpad and the integration of Xten software puts them squarely in the middle of a mounting battle to own the IP communications end point market. I think it’s clear that Yahoo! believes they are on the right track. IMHO, they need to move a little quicker towards open standards on IM and Video if they plan to really make a difference long term.
For those of you who don’t know Xten also powers Vonage, Deutsche Telekom and about 60 other Telcos, Carriers, & OEMs.