Due to privacy issues, Google's policies prohibit remarketing campaigns for 'sensitive' medical issues. Has anyone found a work around to this?

I have more than 7 years of experience in digital marketing, managed over $50,000 in ad spend on various social media networks and currently managing over 30 Social media assets for various clients. You can add as many Funding sources to your Facebook Ad account as you want but all campaigns in your Ad account would be charged to the Primary funding source failing which the secondary and so on. The best practice when you have multiple clients is to ask your clients to setup their own Facebook Ad accounts, add their own credit cards to their own accounts and then give General user access to you to enable you to manage their account and create ads on their behalf. Facebook is all set to launch the Facebook Business Manager which according to Facebook themselves would be a way to help businesses and agencies manage their Facebook Pages, ad accounts and payment methods in one place. You can find out more about the Facebook Business Manager here: https://www.facebook.com/help/businessmanager If you have any further questions, I'd be happy to answer them for you here: https://clarity.fm/gs.gill/expertise/use-facebook-ads-to-meet-your-business-goals

Assuming this is a search campaign, you should be able to see if any new competitors are regularly showing for your keywords. I would also investigate if CPCs have changed (or just conversion rate), how your impression share has changed, and how your average position has changed. If their campaigns are profitable, they will probably continue to run them. Your best bet in the meantime is to optimize your CPC, CTR (helps with CPCs), and conversion rate. You have the history and experience, which should be to your advantage against a new competitor.

It all depends on whether they are all selling the same thing to the same persona. If yes, then combine all the campaigns into one adwords account, which feeds into one analytics account. That way they can get feedback on the effectiveness of different keywords, ads, etc. more quickly (because there will be more data, from all the different websites, all in one place, for a particular keyword). If they are each selling different things, or to different personas, then don't combine their accounts, because it will just make things confusing and not useful from an analysis perspective.

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.

Technically you can bid on competitors. Take for example Autotrader who bids for keywords such as Honda, Ford, etc. But the best advice is actually here http://searchengineland.com/the-complete-guide-to-bidding-on-competitor-brand-names-trademarked-terms-118576