a weblog used for the sole purpose of gaining inbound links or generating thousands of keyword stuffed pages with Adsense and the like
Splog is the process of posting commercial services to blogs, wikis and forums.
noun. Spam blog. A blog created purely as a payload target for spam. The spam itself is delivered via trackbacks, comment spamming or e-mail and the 'splog' is where you end up if you click the spam link (which is something you will not do, of course) The view that genuine bloggers have of splogs is best summed up with the phrase "people who create splogs should die in an unpleasant manner and soon".
A term for spammers who create a large number of blogs with links to a spam site. Because the links are included in a large number of blogs, they have high search-engine rankings. Splogs are created to attract people to spam sites, primarily via Google.