Our daily blend of the latest news, trends and tips for the small business community.

What’s going ‘on’:

Microsoft eyeing business social network buy: Microsoft Corp. is working on a more than $1 billion deal to purchase Yammer, a social network for businesses, according to two people familiar with the matter. Yammer was founded in 2008 by the former chief operating officer at PayPal and has raised more than $140 million in venture capital funding.

Romney says politics behind immigration changes: Mitt Romney says President Obama’s decision to halt deportations of up to 800,000 illegal immigrants was the result of electoral politics, not an effort to improve the nation’s immigration policies. However, he declined to say he would overturn the president’s order.

Facebook loses executive to start-up dreams: Bret Taylor, the social media leader’s chief technology officer, has announced that he will be leaving the company later this summer to start a company along with the manager of the Google App Engine project. Taylor came to Facebook via FriendFeed, which the company purchased in 2009.

Keep an eye ‘on’:

Immigrant business owner number rising:More than one in six small-business owners in the United States is an immigrant, marking a modest increase from the year before and up from just 12 percent two decades ago, according to a new report from the Fiscal Policy Institute.

Helpful advice ‘on’:

How to avoid Facebook marketing errors (Open Forum)

How to approach small business lenders (Entrepreneur)

How to choose the right cloud provider (Fox Business)

How to brand yourself and your business (Business Insider)