Index, Mode & Match Problem?

I have a column of text values which the below formula is evaluating and is then returning the most frequent text value.

=INDEX(A:A,MODE(MATCH(A:A&"",A:A&"",0)))

It works fine when the specified array includes text values, my problem is i am adding to the text values daily and would prefer not to have to adjust the array of the formula each time!

When i specify a larger array (ie. A3:A1000) it returns "0".

Is there any way to combat this?


Thanks in advance