Pidgin 2.5.2 is the premier Windows-based multi-format chat client that should enable you to chat to other users, irrespective of their choice of network. Unfortunately the theory doesn't include Skype (which uses a closed system) nor Facebook, two of the more popular formats for online chats, so it's more suited to the home user and a portable version isn't too much use unless you have a Yahoo, MSN or similar account.
Pidgin and Pidgin Portable links.
J1043+2408 was observed for more than 10 years, and its radio light curve exhibited a periodic signal repeating in about 563 days
Success of Unity's test flight means Virgin Galactic is now close to taking its first paying tourist into space
V3 puts the pro-level football GPS tracker through its paces, and asks if it's more than a gimmick
Finding refutes many earlier studies that suggest that galaxies don't have much dark matter at the time of their birth