nigenet - 12:46 am on Mar 28, 2008 (gmt 0)

I think it depends on the layout of the form to be honest.

For example, a site I used to work on, the "Join Us" form was quite large, gathering various data. But it was laid out in separate sections which were easily discernible, with plenty of information about which sections meant what, and which fields were mandatory and it didn't stop signups.

So in summary, if you lay out your form nicely into relevant sections and inform the user of what each bit means, then you shouldn't have too many problems.

These are my thoughts, Many other people's milages may vary ;-)

Cheers,
Nige