I don't intend to have 'presentations' per say.. just using Powerpoint to create web pages that link to other web pages (also created with Powerpoint). I find features available on powerpoint useful to create pages.... and it worked fine on other Hosts.. The issue you bring up that adds may 'fly in' between frames may be the problem .. would this disappear with upgraded web hosting on Bravenet?

Frames are not supported with free hosting. PP creates frames.

Oops, only read the first para of Martin's reply.

Ads will not be inserted if you upgrade but if you upgrade after uploading the presentation then existing ads will probably not be removed automatically.