Flipboard, the magazine-style content platform for tablets and phones, already makes it easy for users to create their own virtual publications, made up of content they like from other sources — including advertisements. Now the Palo Alto-based company is adding the ability to pull together ads and listings for specific products into a kind of curated catalog, one which readers can use for actual ecommerce transactions as well as just window shopping. These latest moves seem like a fairly obvious route for Flipboard to take, as it tries to appeal not just to readers but to buyers — and to advertisers. And they seem to take the platform even closer to the curated-commerce model of a site like Pinterest, which added “product pins” earlier this year that contain pricing information and other details about specific products that users save using the service, and make it easier for them to buy.