Here are the most relevant news this week in tech and retail.

In Tech:

1. Google  acquires drone maker Titan Aerospace; while shares plunge with missed revenue estimates
2. Dropbox acquires photo managemente/sharing app Loom and document collaboration web and mobile app Hackpad
3. LinkedIn now has 300M registered users worldwide; 100M in US
4. Motorola announces modular phone “Project Ara”
5. Yahoo shares are up on solid first quarter, buoyed by Alibaba‘s (where Yahoo has 24% stake) 66% growth in sales and 110% earnings increase

In Retail:

1. Alexander Wang to collaborate with H&M, to be available in stores and online on November 6, 2014
2. Storefront, the Airbnb for retail spaces raises $7.3M led by Spark Capital (investor in Warby Parker)
3. Chinese sales spur Burberry’s revenues, up by 19%, warns that strengthening pound could affect profits
4. Roberto Cavalli in talks to sell majority stake worth €450M to buyout firm Permira
5. Grocery startup, Instacart, could potentially raise a new round of funding at a $400M valuation