News aggregators are never likely to rank well in a search engine and user acquisition costs will always be high. What are some strategies for user acquisition and are there any examples (blogs, news articles, books, etc) that detail some success stories.
I guess it will really depend based on your target audience and how you can make yourself stand out.
In all cases you can try with the following:
Focus on getting publicity from blogs and online media sites. This will help you a lot when it comes to user acquisition (your target is already there, otherwise they won't be reading news)
2. You might try Facebook ads to drive traffic to landing pages to generate leads. Offer educational content that requires opt-in.
For example: "How to read all the news in less than 30 minutes per day". In the past personally I spent about 1,5 hours per days readying news so if you teach me how to do it faster, you wont me already.
Try with downloadable ebooks, webinars, etc.
I hope that helps. Feel free to schedule a call if you need more help with that. I'd love to give you my advice on that.
What makes your platform different? How does it solve a problem? What makes it unique? Why should people use your service over others? Think these questions through and then work on partnerships. What news sources are you aggregating and why? Reach out to sources, tell them you're featuring them and why. Be a place that all the news is coming together in one place for a REASON
Long answer made short, I like what I call the Kindle Social approach. If one reads a passage in a Kindle book [even the various Kindle readers, not just the devices], they can highlight it and post to Facebook and/or Twitter. So, have an iPhone app built where you populate it with various feeds from your service. Users can highlight portions or share whole posts [actually just the URL of a whole post] via several social channels and email. Finally, get a group of "marketers" aka interns, and/or temp help, to use your app to share links. Then retweet and "like" various posts that come from your tool. It is kind of like the razor blade and the handle. Personally I am a huge fan of aggregation services, but stay away from the "techie" side of it, users don't care! They are buying a 1/4" hole, not a 1/4" drill and bit.