I conspired to provide material support to an independent record store
At least I didn't get arrested is a helluva way to begin a story, but then I never expected the FBI to question me about my online record shopping, viewing it as cover for potentially "Conspiring to Provide Material Support" to an international terrorist organization. "We need some information from you," the email said. "We've also temporarily limited certain features in your PayPal account.
Source: stereophile.com