We use it several ways. We do a lot of communication with middleware over WANs and found that turning method calls and parameters into simple XML strings allowed us to make method calls in a fast simple way. SOAP is devoted to doing this over HTTP, but it works in a lot of other situations too.

Another big use is returning recordsets which XML lends itself to. You don't need to have ADO installed. You don't "need" a parser since any language with string manipulation can encode and decode them...

If you have a lot of values to store and don't need index on them or do fast lookups, create a memo field and throw everything in there with xml tags.

We find more uses all of the time.