Hey snagglepuss. I read a 'real easy rss' writeup the other day. I cant remember who wrote it... hrm
Basically if you're blogging you want an RSS feed, people are coming to expect it.
The easiest way to make sure you have a feed is use software that has feed packaging already inside (word press, typepad, blogger.com, etc)
RSSify used to be an easy way to create an RSS feed from anything but its since gone defunct.
if anyone has good suggestions for non built in RSS feed style generators i'd love to hear em.
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oh you asked if they were neccessary? With a blog they definately are something you'll want to look into. Think of it as a 'super' bookmark that people can republish right on their desktop or in their RSS engines.
the gain from these can be invaluable. Its not 100% neccessary but its definately worth looking into.
Its not just html its a different form that is easily readable and easily syndicated
(stands for real simple syndication)
basic html and text with none of the bells and trappings of the full blown deal.