How can I determine the TAM and SAM of an SAAS company I am looking to startup?

Yes. Use the "Link Text" in your facebook ads to A/B test various domain names. To do this, simply launch a few identical ads, and only change the link text to say the variation of the domain name you are considering. The ad with the highest CTR (not conversion rate or other KPI) will be the one that sparks the most interest in your target audience. Note: one domain may have a high relevance to one audience, but low relevance with another. So this tactic should only be used if you have a very specific demo you are targeting.

I am not sure of the specifics you're asking, it seems like a lot of technical data. This might help in your search for these statistics though: http://jobsearch.about.com/od/networking/a/linkedin.htm http://www.forbes.com/sites/nextavenue/2014/01/21/how-linkedin-is-thwarting-your-job-search/ http://mashable.com/2014/06/19/linkedin-job-search-app/ http://www.cio.com/article/2403150/linkedin/10-linkedin-tips-to-boost-your-job-search.html

As a tech marketer - I am always looking for the fastest, cheapest yet reliable research in order to create competitive intelligence internal documents, stats for blog posts, etc. Some people live by the "if it isn't on the first page, it doesn't matter" when it comes to leveraging search engines as a research tool. However, often when we are looking for value, we have to realize that anything REALLY worthwhile these days from a content perspective is typically gated behind a web form, or nestled inside a blog post. So, expect to spend a few hours in order to get through all the form gates, and also make sure you're using as specific and direct search terms as possible - then getting more generic if results are not ideal. Some other tips: -Have a few "burner" email addresses setup with gmail or hotmail, etc. - these allow you to get content when filling out forms to get White Papers, Reports, Case Studies, etc. without your primary inbox getting stuffed with marketing emails. -In the form fill process, if available put "student" or "researcher" as typically sales reps pass by these "leads" when the form gets dumped into the CRM queue. -Don't forget specialty search sites and tools like Wolfram Alpha for more "numbers" derived searches. -Also, like your question here - always seek the wisdom of crowds in addition to machine learning algorithms! Hope this is helpful! Search on!

I believe Appannie.com is what you are looking for.

Maybe hire a freelance market researcher to find out? ;) Generally, something like this is going to appeal to fortune 500 companies. Smaller companies and entrepreneurs are going to be doing market research themselves. From the question it is difficult to tell if you have come into possession of such a platform, or are thinking about building one. Regardless, to succeed it's crucial that you deeply understand who your target customer is and what pain you are solving for them. Most ideas for a business stem from the entrepreneur's discovery of a solution to a problem for a certain group of people. Since who has the greatest need is unclear to you at the moment, the best thing to do might be to contact people at companies who you think have the greatest need. Find a way to get in touch with someone at the company involved in hiring market researchers, and ask them what challenges they face. You can also talk with a few market researchers themselves to get an idea of where they see the greatest demand of companies looking to hire them. Hope this helps.