Hereafter, you won’t be asking your friends whether they use Facebook via PC or mobile. Its just too ease to get info about it, and it doesn’t involve any hacks to get this feature in your Facebook account. As Facebook updated a new chat feature and rolled out it globally to all its users as you can see the changes made in the chat features like “WEB” & “MOBILE” text in green color will be available next to your friends chat name. It won’t be making any major difference in user interface of Facebook. Its just an additional chat feature enabled by Facebook to its users. According to me it would neglect just a question while chatting other than that it wont help us. How far it can be useful to you just share your views in our comment section below about this new chat feature of Facebook.