Privacy Suite's form fill function works great - much better than the old (now defunct) Google toolbar for Firefox. But form fill does seem to have problems with phone numbers. I think it's because different sites require the phone number in different formats. Some want no spaces or dashes between the area code, prefix and suffix, others do. Still others have three separate fields, one each for the area code, prefix and suffix. IF PS could handle these different formats automagically, that would make the form fill feature just about bullet proof.