The Rootschat forum is one of the best on the internet, covering the whole of the British Isles, with a fantastic Scottish section, and can be located at www.rootschat.com.
More specifically dedicated to Scotland is the ScotFamTree forum, located at http://scotfamtree.11.forumer.com/. There are various tiers of membership, but the most basic is free, and lots of useful advice waiting to be shared.
There are several genealogy magazine forums around, but two of the busiest are those for Your Family Tree and Practical Family History/Family Tree Magazine, both dealing with Scottish queries as well as others from south of the border and overseas.
Finally, several Scottish family history societies operate their own forums. One of the best is that of the Scottish Genealogy Society at www.yabbers.com/phpbb/scotsgen.html , whilst many regional forums can be found by consulting the relevant society's website, a list of which appears at the Scottish Association of Family History Societies' site at http://www.safhs.org.uk/.
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