Since downloading in January, I've bought:
The La's - ST: £3
Crosby Stills and Nash - ST: £10
Brian Jonestown Massacre - Strung Out In Heaven: £8
Animal Collective - MPP: £6
Donovan - Sunshine Superman: £8
I'm also gonna be getting into two or three of these artists' back catalogues and since discovering them on here, I've bought a CSN ticket for £55 and bought Dig! on DVD for £8.
Spotify - awful for my wallet. Brilliant for record companies.