What's the best B2B social media influencer marketing platform?

I think it's still difficult to beat LI when it comes to B2B marketing. Not in all cases perhaps, but in a large majority. Also, Twitter may be worth looking into.

LinkedIn

Linkedin, using hashtags to identify influencers. Each hashtags has a curated feeds with influencer speaking about, for example: https://www.linkedin.com/feed/ha... Linkedin Hashtag Trend can help you identify good hashtags to target. Phantombuster can help you extract the list of influencers.

I think you'll find a lot of people here would like to vote for Twitter - seems very popular with the Indie Hacker community

Depends on the product/ business and its targeted audiences. One size never fits all.

Linkedin would be my choice. But I guess it depends on many different factors and other SoMe channels might work as well.

For me I guess Twitter and linked are best for B2B marketing.

I think it depends on the kind of business one is running. If it is related to something B2B then the best platform is LinkeIn but if it is small business that we see day to day on Instagram, then we can get good influencers from the same platform itself.

always LinkedIn is best

I feel B2B= LinkedIn you can the most out of the platform as well as influencers

LinkedIn is the easy answer. Surprisingly I'm recently observing that Instagram is pretty good for b2b as well.

I had no idea how to establish a business when I first started, but then I came across https://rgray.io/, which proved to be really useful. Because it is their mission to help startups and small businesses grow, they will gladly assist you.

Has anyone tried Youtube? We have got pretty good results with it since I feel the crowd out there is not yet too saturated. Obviously, LinkedIn is kind of a safe bet but I would highly suggest you to try out something on Youtube also.

LinkedIn