I'm not sure if this has been posted here before but most of the users tend to surf the websites on their phone, as it is a relatively quicker affair than booting up your laptop/PC and then going to the website.
If some arrangement can be made for cell phones, it would significantly ease things up, and help both the sellers and the buyers. It personally causes a lot of hassle to be on IM all the time that too from a Desktop. I can't reply to people on time, I can't accept requests on time simply because I am not on PC all the time, but most probably might be on my phone.
Waiting to hear what other members and the dev team thinks!