BetterWorks , the employee perks startup led by Los Angeles entrepreneur and investor Paige Craig, has told its customers that it will be shutting down May 31. The company offered tools to help businesses manage discounts and rewards programs for employees

Some Facebook page owners can now view certain post metrics directly from their Timeline, including the percentage of fans that saw a given post and the percentage of those who saw the post as a result of paid promotion.

Two big customer review platforms are teaming up: Bazaarvoice just announced that it has agreed to acquire PowerReviews .

Facebook has hired the team behind the San Francisco-based user experience research and design firm,  Bolt Peters . Bolt Peters will end operations on June 22 to join Facebook’s design team .

Facebook posted a few positions for engineers, developer advocates, client partners, account managers, communications staff and more this week, according to its  Careers  page. On  LinkedIn  the company posted several data center openings. Posts added this week on Facebook’s Careers  Page : Hardware Engineer 120501 Data Engineer, Product Data Center Technician (Ashburn) Manager, Site Services Developer Advocate Developer Advocate Manager Advocacy Engineer Developer Advocate (London) Developer Advocate, Manager (London) Director of Partner Engineering Engineering Leadership Sourcer Manager, Corporate Communications – Contract (Toronto) Head of CPG/Beverage, Global Vertical Marketing Director, Investor Relations Network Engineer, SW Finance Manager, Technology Infrastructure & Supply Chain IT Operations Manager Manager, Business Ops – Global Mid-Market Sales Quota – Setting & Forecasting Audience Researcher (London) Technical Recruiter – Contract University Recruiter – Contract Account Manager – German (Dublin) Account Manager – Danish (Dublin) Account Manager – Norwegian (Dublin) Client Partner – Danish (Dublin) Client Partner – German (Dublin) Client Partner – Norwegian (Dublin) Client Partner – Swedish (Dublin) Jobs posted by Facebook on  LinkedIn : SEM Analyst Data Center Business Analyst Infrastructure Construction Manager Manager, Corporate FP&A Data Center Network Technician (North Carolina) Data Center Technician (Ashburn) Manager, Global Marketing Business Operations Who else is hiring?

Facebook hired several engineers this week according to the company’s  LinkedIn  feed. Additionally, according to its  Careers  page, a removed job listing could mean a big hire in India: Corporate Communications Manager. Other positions now removed from its Careers page include positions in mobile, marketing and a few others.

This week, Inside Facebook asks people who have built businesses on the Facebook platform why they believe in the company. These are the people that are truly invested in Facebook, whether or not they bought stock. For Part 4 of our series, we spoke with Rick Marini, founder and CEO of professional networking service BranchOut . The Facebook app lets users organize their professional connections, see which friends have worked at companies their interested in and search for jobs

Knowing how users react to Facebook’s product changes is crucial to the site making the right moves, so today it closed an acq-hire of part of design research firm Bolt | Peters — specifically its leading man CEO Nate Bolt and several other employees from the six person consultancy. Those coming over will be joining Facebook’s design team that’s headed by Kate Aronowitz.

This is guest post by Julia Szopa , program director at the blackbox.vc incubator in Silicon Valley which specialises in moving European startups into the US. It is not uncommon for European entrepreneurs to come to the Silicon Valley to learn how to launch globally. However, they often play “the startup game” by the wrong rules

Editor’s note:  TechCrunch  columnist  Semil Shah  currently works at  Votizen  and is based in Palo Alto. You can follow him on Twitter  @semil “In the Studio” continues this week with an engineer who began programming at the end high school, double-majored in CS/EE in college, dropped out of Stanford’s graduate CS program to become the second employee at Mint.com, and after spending some time at Intuit (which acquired Mint), now has her own company focused on building software for the small-medium business market