As far as my creations I go: I don’t mind what you do with them. I don’t own the Sims 3 copyright (I have purchased all of my Sims 3 games, which is the base games and all EPs/SPs), or anything related to it, obviously. In fact, I didn’t even pay for the tools that I use to make my mods (s3PE, s3OC, Packer, Notepad++, WinMerge, ILSpy, VisualStudio Express 2012), because they are free in the first place. Please don’t upload anything I create to pay sites, and don’t upload anything to the exchange either. I love to know what people to do in their games though, so if you use something I made in your story, feel free to share it with me. Otherwise, go crazy!
You may edit my mods, use them as a basis for your own mods, “steal” my “idea” and put your name on it and do whatever you want. I always appreciate a thank you or a link back, but again, I’m really not fussed about being credited. You may upload my mods elsewhere, as well, but keep in mind that I will always update my mods when necessary, so I advise you to either update them yourself, or re-upload the mod when I’ve updated it.