Per the website I linked before:
(http://www.isogg.org/wiki/Autosomal_DNA_testing_comparison_c...)

Number of autosomal SNPs tested:
23&Me 577,382
FTDNA 708,092
Ancestry 682,549
Nat Geo Project 126,307

So yes, AncestryDNA does test SNPs. Perhaps you are thinking of the fact that they do not offer a chromosome browser. This is vitally important when trying to triangulate a match. I have plenty of cases of matches at AncestryDNA that have tree matching ancestors that are not the source of the DNA (i.e. the listed ancestor match is on my maternal side but the DNA is coming from my paternal side). That is due to the extreme amount of colonial ancestry I have on both sides and the depth of my tree.

You cannot transfer FTDNA data to Ancestry. You can only transfer AncestryDNA to FTDNA.

But GedMatch (www.GedMatch.com) will take both FTDNA and AncestryDNA files (as well as 23&Me and NatGeo). So GedMatch is a good place to aggregate people from all the major test sites. If they've transferred that is. Many people do not.

Here are some of the links and information I give out to people. Not sure of your level of understanding, or of your research needs, but I find lots of good info on these sites:

Good site with tools for managing data from various testing companies:
www.DNAGedcom.com

Adoption resources:
www.DNAAdoption.com (This one has lots of good links that help anyone, not just adoptees looking for answers)
http://groups.yahoo.com/group/DNAAdoption

Here is a link to a good beginners guide that can help you understand genetic genealogy:
https://sites.google.com/site/wheatonsurname/beginners-guide...

Here are the bloggers I read on genetic genealogy. Several of their posts are linked from the previous sites I mentioned. I go back and re-read posts as I understand more and more about this subject.
The Genetic Genealogist
Your Genetic Genealogist
Kitty Cooper
DNAeXplained
Legal Genealogist
Genealogy Junkie

For reference, here is a link for the statistics for genetic matches. Note that these are averages -- you can get less or more depending upon how your DNA randomly recombined, which is how some siblings share more than 50% and some less. Going down a generation then their children will share either more or less than the average 12.5% that 1st cousins share. And so on as generations extend.
http://www.isogg.org/wiki/Autosomal_DNA_statistics

Discussion group and info on using Jeff Snavely's chrome extension tool for managing Ancestry matches:
http://groups.yahoo.com/groups/AncestryDNA_Discussion

New favorite tool for aggregating data from testing companies in lieu of spreadsheets:
www.GenomeMate.org