Have I, No.
Would I? Yes.
The issue with this field though, as so many, is that there are too many 'have a go hero's'. I have run X Y Z campaign, or my personal twitter feed has x,000 of followers.
What would I want to see from any agency, or freelancer on this.
- Engagement statistics.
- ROI statistics.
- Cost Benefit Analysis.
If your social media strategy is to be visible, set up a bot and post via that. It's a solid strategy, after all, who wouldn't check a company was legit but reviewing their social platforms, it is just common sense. However, if you are paying someone just to be visible and don't satisfy the above three elements. I think you have a strategy misalignment.