Definition
Ultimate Demon is an automated link building software that specializes in submitting websites to online directories, social bookmarking platforms, and profile creation services. The tool automates form filling, captcha solving, and submission across thousands of platforms in its internal database. Popular in the 2010-2015 era, Ultimate Demon was widely used to quickly build diversified backlink profiles at low cost. However, directory and bookmark submissions have lost virtually all SEO value since the Google Penguin and Panda updates. Links from these platforms are generally ignored or treated as spam signals. LemmiLink enables obtaining natural editorial links far more effective than automated mass directory submissions.
Key Points
- Specializes in automated submission to directories and bookmarking platforms
- Automates form filling and captcha solving
- Directory and bookmark links have lost all SEO value since Penguin
- Tool has become obsolete due to Google's algorithm evolution
Practical Examples
Mass directory submission
Ultimate Demon automatically submits a site to 5,000 web directories by filling in submission forms, categories, and descriptions in an automated manner.
Automated social bookmarking
The tool creates accounts on social bookmarking sites (Delicious, StumbleUpon, Diigo) and adds bookmarks containing links to the target site.
Link devaluation
After Google Penguin 4.0, the thousands of directory links created by Ultimate Demon are devalued to zero, making months of effort completely useless.
Frequently Asked Questions
No, mass directory submissions have had no SEO value since Google Penguin. Only a few high-quality niche directories may still provide marginal benefit. LemmiLink offers far more effective editorial links.
The software still exists but its use has become largely obsolete. The submission platforms it targets no longer have significant SEO impact since Google's algorithmic updates.
Go Further with LemmiLink
Discover how LemmiLink can help you put these SEO concepts into practice.
Last updated: 2026-02-07