If you are using other related forums on the net you can promote this site in your signature. 

Here are some examples of BBCode you can use in your signature on various brand forums

will work on vBulletin boards and will look like this Harmonica Club.com

will work on phpBB forums and will look the same Harmonica Club.com

Don't go overboard with text size as this can look a bit spamy.

If you know any other site administrators with related sites that might be good enough to exchange links with us please ask them.

Our Site details are:

Any takers are welcome to adlib on the description.