So I'm working on new eBay store front, and wanting to implement some new features and provide a look that can separate my store fronts away from BANS. I started working with the API, since some of hte features 'appear' to be only available with the API, but that got me thinking, I was wondering if I've been ignoring some of the querstring variables used to create the eBay RSS? I thought a simple Google search on eBay RSS querystring or variables would lead me to a full developers variable definition list, but no? Some of the variables I was able to get definitions from various sites on the net, but I still have about half that are needing definitions.
If you can help supply some of the definitions, please contact me, so we can complete this list. Also, let me know of any variables not listed, I'm sure there are additional name/value pairs out there as well (possibly WSDL definition with the RSS web service???).
FeedName = verb similar to API (SearchResults)
siteId = country 0 = ebay.com (0)
language = language and timezone to return (en-US)
output = what version of RSS we want (RSS20)
sacat = category for search
ftrt = time related? (1)
fbd = ? (1)
floc = ? (1)
saslop = ? (1)
fsop = ?
fsoo = ?
from = ? (R6)
fss = (0)
sacur = currency 0 = us dollar (0)
fpos = optional - zip code
afcj = cj affiliate code
saslc = ? (0)
fcl = possible related to images (3)
saaff = affiliate association (afcj)
catref = ? (C5)
frpp = items returned - doesn't work, always 100 results returned (100)
satitle = keyword searching
ftrv = time related? (1)
fts = both the title and description is searched (2) [1 = title only]
saatc = ? (1)
sabdlo = min price
sabdhi = max price
ffsh = free shipping [1 = free shipping only]
sappl = paypal only sales [1 = paypal]
sascs = 2 - BIN items only, 1 = auctions?
sadis = distance [ie: 200 for 200 miles from zip]Here are some great sort value definitions
&fsoo=1&fsop=1 - Auctions Ending First
&fsoo=1&fsop=32 - Best Match
&fsoo=2&fsop=2 - Newly Listed Auctions
&fsoo=1&fsop=34 - Price and Shipping with Lowest First
&fsoo=2&fsop=3 - Highest Price First
&fsoo=2&fsop=34 - Price and Shipping with Highest Price First 
It is really nice list of variables. But what i observer is that for minimum price they used saprclo and for maximum price they used variable name saprchi. I have one question, if buyer wants to select payment type like paypal, direct payment or credit card etc. When searching how can he select the products with specific payment type ? Thank you
Great list! Thanks :)