With employers big and small announcing layoffs, there’s plenty of interest in figuring out which companies are the best places to work — after all, we may all be looking for jobs soon. Glassdoor.com, a site that compiles salary data and CEO ratings, is in a good position to take advantage of that interest. It’s growing at a healthy clip, and just announced a $6.5 million second round of funding.

The Sausalito, Calif. startup isn’t the only salary-sharing or company-rating site out there, but its data is probably of a higher quality, because it asks for relatively detailed information. For example, I found their reviews of Google to be entertaining and informative — among other things, I learned that Google is a good company for singles. Glassdoor says it now has 110,000 contributions on 14,000 companies, up from 60,000 reports on 11,000 companies in August. In the current economic climate, I expect the site will continue to grow. After all, professional networking site LinkedIn saw a spike in usage after the financial meltdown, and that same uncertainty will probably drive people to Glassdoor.

Although you need to contribute a report before you can access all of Glassdoor’s data, the company shared its highest and lowest ratings with me. According to Glassdoor users, Adobe is the best company to work for, while sprinkler company Rain Bird is the worst. (I don’t know anything about Rain Bird, but it was also the lowest-rated company back in August. What do people have against it?) The highest-rated chief executive is Apple’s Steve Jobs, and the lowest is Office Depot’s Steve Odland.

The round was led by Sutter Hill Ventures, with participation from existing backer Benchmark Capital. This money brings Glassdoor’s total funding to $9.5 million.

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