RSS (Rich Site Summary or Really Simple Syndication) and once called RDF Site Summary is a way of shifting information from one website to another, though has other uses such as the suggestion from Clockwerx. It's more or less an XML format containing the information provided and is interpretted at the user end with a script, usually Perl, though ASP and PHP can also be used. The news headlines on my website is a good example of what RSS can be used for, though I still used the old fashioned Javascript feed, but shhhh, don't tell Clockwerx.
Does the mIRC forums need this functionality? No. Why? Because the forum already provides what Clockwerx wants, albeit in a slightly less accessible way. However Clockwerx is forgetting one thing - the big advantage of RSS is it's ability to work without human intervention. The site admins here would have to read each and every post every day of the week to fulfil Clockwerx' content requirements.