If I remember rightly, it's 250
characters, not words, and that most likely includes spaces, so 65 words could top that limit easily. The extra characters needed for links are included in that count. I suggest you try a short signature for a starter to find out how it works.
A reminder to all newcomers (and 'older' members, if necessary) - we ask you to limit your signature to three lines or less. It should not normally be the longest part of your post!
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'Mercy!' cried Gandalf. 'If the giving of information is to be the cure of your inquisitiveness, I shall spend all the rest of my days in answering you. What more do you want to know?' 'The whole history of Middle-earth..
.'