BOLO Brands (Be On the Lookout)
These are lists of brands that resellers, especially on platforms like Poshmark, consider valuable based on current market trends. By being aware of and purchasing these brands, resellers aim to increase profits. However, the value of BOLO brands is highly dependent on factors such as geographic location, buyer demographics, and platform-specific market fluctuations, leading some resellers to view them as unreliable guides. BOLO lists also reflect the fluctuating nature of platform work, where visibility and hype influence demand unpredictably, and also point to a place where platforms could more transparently communicate data to secondhand workers.

Cross-listing
The practice of listing the same item on multiple reselling platforms simultaneously. Cross-listing allows resellers to maximize their exposure and coordinate listings across platforms. This kind of automation replaces repetitive data entries across platforms, and effectively creates a patchwork of different platform systems. Generally, Cross-listing is not referred to as automation, which confuses some resellers who see bots frowned upon.

Collective Sensemaking
The process by which groups come together to interpret, understand, and respond to shared challenges or uncertainties. For online secondhand worker communities, collective sensemaking involves sharing insights, experiences, and strategies such as using tools to navigate platform demands, market trends, and technical issues. This process often takes place informally in online forums, social media groups, and reseller communities. Currently, reseller communities rely heavily on informal networks to interpret platform changes, algorithmic behaviors, and market fluctuations. Without clear guidance or transparency from platforms, resellers must crowdsource knowledge to adapt to new rules or unexpected shifts. This informal approach, while building forms of community, is often limited by incomplete information and driven by speculation.

Reseller
An individual who buys goods (often secondhand) and sells them at a markup. Increasingly, resellers rely on platforms like eBay, Depop, or Poshmark. Resellers are integral to the secondhand economy in the US, often operating as gig workers under platform-imposed constraints, which affects their pricing, visibility, and business strategies.

Sharing Bot
An automated tool that performs repetitive tasks, such as sharing listings or following users, on behalf of resellers on Poshmark.com. While bots can save time, their use possibly violates platform rules, putting resellers at risk of suspension. The enforcement of bot moderation is ambiguous on Poshmark, highlighting the tension between automation and platform governance.

Share Jail
A colloquial term similar to ‘shadow ban’ used by resellers on platforms like Poshmark to describe the temporary suspension of the ability to share due to reaching sharing limits within a given period. The share jail is usually felt through share limits rather than receiving an explicit notice from the platform. This emphasizes how platform rules around content interaction impact reseller visibility and sales. "Share jail" is an example of how resellers’ control over their visibility is mediated by algorithmic limits imposed by platforms and how reseller communities make sense of technical mechanisms of control.

Share Train
A cooperative effort among resellers, especially on social selling platforms, where members take turns sharing each other’s listings to increase exposure and sales. This social practice underscores the communal aspects of reselling and how peer support helps resellers navigate platform-imposed limits. The "share train" represents an organic workaround to algorithmic restrictions and reflects collective forms of labor within the gig economy.

Terms of Service (TOS)
The rules and guidelines that users must follow to participate in a platform. For resellers, violations of the Terms of Service (ToS) can result in suspension, reduced visibility, or other penalties, making them essential to understand and navigate when managing a business online. It is often unclear how platforms enforce these terms and whether they are uniformly enforced, especially when the moderation is done algorithmically.

VERO (Verified Rights Owner) List
A list of brands and products monitored by platforms like eBay for intellectual property violations. Sellers must avoid listing items from these brands without proper authorization or avoid using copyrighted materials to prevent their listings from being removed or accounts being suspended. The platform delivers the violations notices but is often unclear about the reasons or how they were detected. This increases the information asymmetry in the way platforms and corporate actors govern reselling work on platforms.