After a lot of holiday work, I now have Weasyl and Inkbunny feeds pulling into Fursquare! :)

The way this works is you enter your credentials into Fursquare (in Weasyl's case, an API key, or in InkBunny's case, a username and password). This is stored on the Fursquare API server, and a few times per day, the information about your unread messages is downloaded. In Fursquare, when you open your feed, you're seeing your aggregated feed across all these feed sources - Weasyl and Fursquare comingled. From there, you will be able to link directly to the source site from that screen. I'd like to add FurAffinity too, but without any API and an anti-scraper stance, it seems not to be. If you know other art sites that have API's you'd like to see integrated, let me know!

I plan to enhance this with a deeper integration with Fursquare. For instance, if you state you're going to Anthrocon 2015, the AC Twitter feed would be intermingled in your feed, and if you say you're not going, it would not. These selections would only affect what is presented in Fursquare, they would not manage your friends/follow lists on those various other services.