Hi,
I found some interesting data. I took a screenshot and included it in a blog. I credited the source where I found it.
The person who apparently originally came up from the data has emailed me threatening to sue me for using it without their permission or alternatively said I can pay them £1,000.
This has freaked me out slightly. Did I break the law here? I figured if it was in the public domain and I credited it, then that was all that was needed??