Update README.md

README.md

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+## Data Cutoff
+
+This dataset is derived from the FineWeb dataset, which itself is filtered and processed from Common Crawl web data. The latest Common Crawl shard included in this release is **CC-MAIN-2024-10**. No data from crawls after this snapshot are included.
+
 ## License
 
-This dataset is released under the **ODC-By** license. However, you must still comply with the **FineWeb license** and the **Common Crawl Terms of Use**.
+This dataset is released under the **ODC-By** license. However, users must comply with both the **FineWeb license** and the [Common Crawl Terms of Use](https://commoncrawl.org/terms-of-use/). By using this dataset, you acknowledge that its contents are sourced from public web data and are subject to the respective source licenses and terms. Please ensure your usage complies with all applicable laws and regulations.
+
+## Personal and Sensitive Information and Opt-Out
+
+While significant efforts have been made in the original FineWeb dataset to filter, anonymize, and deduplicate personal and sensitive information, due to the nature of large-scale web crawls, some personally identifiable information (PII) may still be present. If you find information related to yourself and wish to have it removed, please open an discussion on the HuggingFace dataset page and we will contact you for removal as soon as possible.
+
+Similarly, Common Crawl respects robots.txt at crawl time, but if you are a webmaster and find your website content included in this dataset and would like to have it removed, please also open a discussion on the HuggingFace dataset page and we will contact you for prompt removal.