Ebay: Email addresses and some URLs no longer allowed in Member-to-Member messages

Beginning November 1, eBay’s member-to-member contact policy will be updated to prohibit  members from exchanging in member-to-member communications email addresses or URLs to non-eBay sites that don’t directly help buyers purchase items on eBay.  Messages that include phone numbers and links to additional information that aid in the purchase decision or facilitate item delivery—warranties, manuals, and tracking links, for example—will still be permitted. Ebay discourages buyers and sellers from sending offers to buy and sell outside of eBay, as these transactions are not covered by eBay Buyer Protection.

For more information about these changes, see eBay’s Member-to-member contact policy.

Source: ebay.com