We don't provide an advertising platform for BOSS at this time, and we don't allow advertising yet. When the new fee structure is in place you will be able to monitize your own platform using whichever advertising technology you prefer.
Yahoo! Blueprint our cross-device mobile web solution has a couple of ways that you can use to include your advertising. The
Display Ad Tag and the
Text Ad Tag.
If you are thinking of doing any mobile web site development I'd highly recommend looking at Blueprint because it allows you to develop one site that works on a huge range of handsets from many different manufacturers.