7 of the best!

1 – Digital Point Webmaster Forums 

http://forums.digitalpoint.com/forumdisplay.php?f=53

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2 – The V7 Network

http://www.v7n.com/forums/want-exchange-links/

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3 – Warrior Forum

http://www.warriorforum.com/warrior-reciprocal-links-buy-sell-swap/

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4 – I Web Tool

http://talk.iwebtool.com/forumdisplay.php?f=84

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5 – Webmaster – Talk

http://www.webmaster-talk.com/relevant-link-exchange-forum/

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6 – UK Webmaster World (UK)

http://forums.ukwebmasterworld.com/reciprocal-link-exchange/

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7 – Webmaster Serve (UK)

http://www.webmasterserve.com/link-exchange/

 Official Advice – Remember DO NOT BUY LINKS! You could be penalised.