>When building new forms, I found myself repeating calls to business objects dropped on the form. About half of the calls were This.Bizobj.Somefunction() and the other half Thisform.Bizobj.Somefunction().
>
>In this instance, THIS and THISFORM were the same, so I'm wondering which would be the better to use, and why. Neither Help or HackFox 7 shed any light on this thought.

AFAIK should not be any difference. For maintenance THISFORM could be preferable, for less typing - THIS. But of course better to use the same notation in one method to avoid confusion.