Reneging on an offer means revoking it after it has been accepted, and that's poor form.
Turning down an offer puts you into a small category of "people we would hire if we had the chance" and the recruiters or hiring managers will follow up with you for some set period of time just in case something changes on your side. They already have decided you would be a good fit, after all.
Turning down an offer puts you into a small category of "people we would hire if we had the chance" and the recruiters or hiring managers will follow up with you for some set period of time just in case something changes on your side. They already have decided you would be a good fit, after all.