Lk
Linkedinium
Group I-A · Generalist Series · 2003
- Mass
- 1B+ accounts
- Origin
- Mountain View, USA
- Custodian
- Microsoft
- State
- Stable, dominant
- Cost
- Free; premium $30+/mo
The most abundant element in the professional networking class. Forms strong bonds across all sectors and demonstrates remarkable stability under normal industry conditions.
Bonds Readily With
ProfileJobsRecruitersLearningContent
High concentrations of automated content observed. Premium tiers required for advanced reactions.
Id
Indeedium
Group II-B · Job-Search Series · 2004
- Mass
- 350M monthly visitors
- Origin
- Stamford, USA
- Custodian
- Recruit Holdings
- State
- Highly reactive (job catalyst)
- Cost
- Free for seekers
A highly reactive element showing exceptional affinity for job-seeking compounds. Bonds with Glassdoor (Gd) to form an effective employment intelligence compound.
Bonds Readily With
GlassdoorResumesSalary DataReviewsQuick-Apply
Inert with networking elements. Sponsored isotopes may obscure organic signals.
Wf
Wellfoundium
Group III-A · Specialist Series · 2010
- Mass
- 8M+ accounts
- Origin
- San Francisco, USA
- Custodian
- AngelList
- State
- Niche, transparent
- Cost
- Free for candidates
A rare element confined to the startup substrate. Distinguished by full disclosure of compensation properties — both salary and equity values are displayed in every reaction.
Bonds Readily With
StartupsEquityFoundersInvestorsRemote-Only
Inert outside startup ecosystem. Limited availability in corporate substrates.
Mt
Meetupium
Group IV-A · Convening Series · 2002
- Mass
- 52M+ members
- Origin
- New York, USA
- Custodian
- Bending Spoons
- State
- Catalytic (in-person)
- Cost
- Free; host fees $20+/mo
The only catalytic element in the table requiring physical presence for full activation. Lunchclub (Lc) acts as a paired isotope, providing 1:1 algorithmic matching.
Bonds Readily With
Local GroupsIn-PersonHybrid1:1 PairsInterest-Based
Inert with employment elements. Activation requires user to leave the screen.