RSS xml links spidered & indexed the same?

2 pages in xml (www.m.com/rss.xml & www.m.com/rss) spiders treat the same?

[financialhost]

I am about to implement some RSS feeds on my website but have come accross a rather interesting dilema.
I was considering nameing my feed www.widgets.com/rss but then i realised that it might be considered different by spiders & search engines if i named it www.widgets.com/rss.xml

Will spiders treat an xml webpage different when spidering a website?
How about indexing...
Could a webpage with the xml extention be placed lower down in the serps because of browser incompatability?

And most important of all... if i use the webpage www.widgets.com/rss will the search engine understand this contains rss & add these feeds to the appropriate places?

I am sure your agree these are interesting questions, does anyone have an opinions or know the answers?

[encyclo]

How a file is recognized/parsed depends on mime type not on file type. Whether your file is named rss, .xml or .foo, if you set the mime type as

application/rss+xml

then the contents will be seen as RSS.

[financialhost]

If this is true then why does Google have problems understanding the file type of xml webpages...

Doing a search with rss keyword combinations you will notice that xml pages indexed have a - file not recognized - view as html beside the listings.