There's a formula that is so useful to me on http://office.microsoft.com/en-us/excel-help/count-occurrences-of-values-or-unique-values-in-a-data-range-HP003056118.aspx
It's this:
=SUM(IF(FREQUENCY(MATCH(B2:B10,B2:B10,0),MATCH(B2:B10,B2:B10,0))>0,1))
Which is described on its site as: "Count the number of unique text and number values in cells B2:B10 (which must not contain blank cells)"
My problem is I need it to allow for blank cells interspersed in the range, but just not count those.
Thank you for any help.