Quiet closure with no public announcement · Fatal mistake: Twitter acquired Posterous as a talent acquisition; product was secondary and shut 13 months post-acquisition once engineering team was absorbed into Twitter's product organization
Evaluating only Posterous’s profile at its peak — without knowing the outcome — the model ranked Competition as the #1 likely cause. Documented cause: Acquisition gone wrong.
Key Events Timeline
PRODUCT LAUNCH
Posterous launches from YC W08. 'Post by email' mechanic: send to post@posterous.com and content auto-publishes as blog. No account creation required. Simple blogging for non-technical users.
FUNDING
Raises $4.5M from Redpoint Ventures and SV Angel. Total funding approximately $6.5M. Grows to meaningful user base in blogging community. Co-founder Garry Tan later becomes YC President (2022).
ACQUISITION ATTEMPT
Twitter acquires Posterous March 2012 for undisclosed sum (~$10-15M estimated). Rationale: engineering talent and technology to improve Twitter's posting and media UX. Product to continue operating.
SHUTDOWN
Twitter announces Posterous shutdown March 15, 2013 — effective April 30, 2013. 13 months post-acquisition. Users get 6 weeks to export content. All Posterous sites go offline. Engineering team absorbed into Twitter product org.
Full Analysis
Free · no account needed
Documented cause
Posterous was founded in 2008 by Sachin Agarwal and Garry Tan (who would later become President of Y Combinator from 2022) in the YC Winter 2008 batch. The product addressed a real friction point: posting to a blog required opening a browser, navigating to the CMS, and composing there. Posterous let users post by sending an email to post@posterous.com — attach photos, they became a photo blog; attach text, it became a post. The simplicity was elegant. Posterous raised approximately $6.5M from Redpoint Ventures, SV Angel, and other investors. The company grew to a meaningful user base with a following in the blogging community. In March 2012, Twitter acquired Posterous for an undisclosed amount — widely estimated at $10-15M. Twitter's stated rationale was that Posterous' technology and team could improve Twitter's own posting and media experiences. The acquisition team included Garry Tan and Sachin Agarwal. Twitter used the talent primarily for product improvements to Twitter itself. On March 15, 2013, Twitter announced it would shut down Posterous on April 30, 2013 — 13 months after acquisition. Users were given 6 weeks to export their content. All Posterous sites went offline. The announcement noted that the Posterous team had "moved on to other roles" within Twitter. This was a textbook acqui-hire: the product was acquired for the people, not the product.
Lesson
“When a platform's users invest years building content, an acquisition that ends with "export your data in 6 weeks" is a betrayal of every creator who chose the platform. Acqui-hires do not consider users as stakeholders.”
Failure anatomy
Collapse type
Silent Shutdown
🐌 LOW
Hype cycle
trough of disillusionment
Moat type
Switching Costs
Fatal mistake
Twitter acquired Posterous as a talent acquisition; product was secondary and shut 13 months post-acquisition once engineering team was absorbed into Twitter's product organization