I think steam is a great way to sell visual novels and bring it out for the PC games market to see. Steam in particular has a great way of letting you talk and share things with people interested in the same game with its community hub and discussions/reviews board for every individual game. The social aspects and convenience of steam I think are its strong points. Not having H-scenes in steam sold visual novels isn’t too much of a drama, fans usually find a way around it through modding/patching. Though with this much of publicity you can expect any amount of negativity from people of all corners of gaming (:kudshock: when I see someone review vote down Planetarian on Steam).
Without Steam’s discussions board I probably wouldn’t have found Kazamatsuri.org