One of the best ways is to do exactly what you are doing right now. Participate in Forums and leave a signature.

Build links daily through forums, article marketing, and blog commenting. Be consistent with your SEO work. Stay clear of black-hat SEO methods.

@ROHIT - Great explanation. OCuld not have said it better myself!

The best link-building methods are the natural methods that are white-hat and consistent. Build these naturally each day.

If you produce good content or have quality products on your site, that can help acquire natural links.

If you are asking about white hat SEO, You need to get more and more back links through off page techniques.

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Micro Blogging is the one of the best imaginative way to generate back links and traffic. I have tried and I recommend you to apply for your site.

Hi,
Mr Graham,

What is redirecting basically? Prompting direction to someone to follow that way, Isn't it! And 301 is an error code that is normally interpreted as "moved permanently". So, Now we can understand that somewhere this is the method of web page redirection and Yes! this is a very excellent and commendable search engine loyal method for web page redirection, In case, you need to change your file name or move that page by maintaining your ranking for that particular URL.

In my opinion, Forum posting is the best way to attract potential traffic as well as getting an ample amount of back links.

I use social bookmarking to help get my blog posts indexed faster. As for link builder I would look for other ways such as having and informative blog or write articles that links pointed back to your site.