Amazon, del.icio.us, and other major sites also vulnerable to spam

Just to show that the big guys also fall victim to comment spam from time to time, link aggregator del.icio.us and bookseller Amazon have both been hit by blog spammers.

In the first case, blog spam has made it into the del.icio.us popular list — a list of top and most popular links. See an example at GigaOM blog article del.icio.us Popular is spammed.

In the second case, Elliot Back documents how a comment spammer has managed to get 100,000 copies of the same ad into Amazon reviews. See his article Spammers Hit Amazon.com Reviews.

Likewise, Gadi Evron of SecuriTeam reports that Reddit, a curated community news site, has been plagued with spammers and vote-bots.