Why need to sponsor it, sir? Social media login is common feature now a days for any regular website, where visitor or client need to login. As we are not fully fresh with hosting business that means we already using or had using others billing panel, where have this features & our clients already habited to using it. Now if you have enough $$ & staff to do it free for us then do it. Else, develop it & release in your marketplace & charge few $$ for the modules. Who have need it they will purchase it & using it's, that's simple. As a hosting provider we are not only selling/reselling domain/shared hosting. We are reselling different company vps/dedicated servers/others products as well. So, you need to develop those modules as well for us & you can give us it free or as paid. But end of day, you must need to grow your modules collections if you want to get more & more sales for your billing panel.