While there are many initial intents for providing/serving RSS feeds, please keep in mind that that the RSS TOPIC CREATOR script provides something that is somewhat of a grey area with respect to taking someone elses content, hosting it on your server, and presenting it as your own content.
RSS is for news syndication. Not free web content for your website.
Game scores, weather, news snippets pointing back to the source...etc. Basically being responsible with the content someone else created and is sharing.
as far as your other question on who can write this for you, feel free to open the script and look at its bits. the script is rather short. Pull up a sample RSS 2.0 and ATOM (rss/xml) file and read them. its straight forward.
its one of those things where once you set it up and it is working, there is no further adjustments needed its low level "take from column A put in to column B." stuff.
