This is a bit strange. If you go into my profile it shows that I have 174 books on my WL. If I use the drop down box under my account it shows 195, which is more accurate. Does it have to do with WL books I have on hold? I have a group that I'll eventually want but just not right now .... anyhow, that's the only explanation I can think of. 

Susan, you nailed it: books on hold don't count toward the total on your profile page :) For example, I have the full 200 listings on my list, but only 123 showing on my profile, because I have all my first position books on hold until I know I can handle an offer.

When you look at the list in your prfile you are seeing your public wish list - the same thing everyone else sees - so no books on Hold will be shown. If you look in the upper left corner of the profile wish list tab you will see:

The books you have on hold are not shown here.

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My public WL shows 25 books. I have a full 200 on there. You can't see 'em because I have most of them on hold.