Kirsti Lang

Kirsti is a journalist turned content marketer based in Cape Town, South Africa. Her work has appeared in publications like Women's Health, Harper's Bazaar, Runner's World, Red, and Sheerluxe.

WebsiteX (Twitter)

A collection of 101 posts

InstagramAug 13, 2025
How Often Should You Post on Instagram in 2025? What Data From 2 Million Posts Tells Us

Data-backed guidance on how often to post on Instagram in 2025 for maximum reach and growth. Insights from 2M+ posts reveal the sweet spot for frequency without burnout.

TikTokAug 11, 2025
19 Trending Songs on TikTok in 2025 (+ How to Use Them)

An up-to-date list of the most viral songs and sounds on TikTok in 2025 — and how to use them to boost your content.

InstagramAug 7, 2025
Instagram’s New Friends Map: What It Is, How It Works, and What You Need to Know

Instagram’s new Friends Map is here. Learn how it works, how to keep your location private, and what it means for creators and brands.

13+ Free Social Media Calendar Templates to Help You Plan Your Content

From downloadable PDFs to spreadsheets to tools, here are over a dozen free calendar templates to help you plan your social media content — in the way that makes the most sense for you.

TikTokJul 24, 2025
The Best Time to Post on TikTok in 2025 — New Data

We analyzed more than 1 million videos sent through Buffer to pinpoint the best time and day to post on TikTok for maximum views.

InstagramJul 23, 2025
The Best Time to Post on Instagram in 2025: We Analyzed 2 Million+ Posts to Find Out

We analyzed more than 2 million Instagram posts sent through Buffer to pinpoint the best time, day, and post format for maximum reach.

DataJul 16, 2025
Data Shows Best Content Format on Social Platforms in 2025: Millions of Posts Analyzed

Video, photos, carousels, or text? We dug into Buffer’s data, analyzing millions of social posts from Instagram, TikTok, LinkedIn, Facebook, Threads, and X to find out which content format performs best.

InstagramJul 1, 2025
17 Trending Sounds on Instagram in 2025 (+ How to Use Them)

Stop chasing the tail-end of Instagram audio trends — here are the latest trending songs on Instagram in July 2025.

AIJun 27, 2025
9 of the Best AI Writing Tools and Assistants to Help You Work Smarter, Not Harder

I’ve put dozens of AI writing tools to the test — here's a deep dive into my favorite AI writing generators and who I think they’ll be most useful for.

ProductivityJun 24, 2025
I’ve Tried 50+ Productivity Tools — Here are My Top 9

I've tried 57 productivity tools in the past year. These are the ones I keep coming back to.

The Best Time to Post on Social Media in 2025: Times for Every Major Platform

We pored over millions of posts on Instagram, Facebook, Twitter, YouTube, TikTok, and LinkedIn to pinpoint when the best-performing content was published.

Self-ImprovementJun 12, 2025
11 Simple Things You Can Do Today That Will Make You Happier, Backed By Science

Looking for some low-lift ways to make yourself happier? Here's some of the best research that we've found on personal happiness.

BlueskyJun 11, 2025
Bluesky Verification is Here: How the Blue Check Works

Here’s what you need to know about how verification works on Bluesky — and how to get your blue check.

BlueskyMay 27, 2025
'Live Now' Badges are Coming to Bluesky: Here's Everything We Know So Far

With Bluesky's livestreaming feature, users will be able to discover when someone is live — and jump directly to YouTube, Twitch, or another platform to watch.

ThreadsMay 20, 2025
The Best Time to Post on Threads in 2025 — Data from 700K+ Posts

We analyzed hundreds of thousands of Threads posts sent through Buffer to figure out which time slots got the most engagement.

InstagramMay 15, 2025
Unlockable Reels Are Coming to Instagram: Here’s How They Work

Unlockable reels are designed to encourage “a new, IYKYK way” of engaging with your community on Instagram. Here's how they work.

TikTokMay 12, 2025
TikTok Algorithm Guide 2025: Everything We Know About How Videos Are Ranked

A deep dive into the TikTok algorithm, how it works, and how you can work with it to enhance your visibility and engagement on the platform.

AIApr 28, 2025
The 9 Best AI Image Generators of 2025 (+ Examples)

Tried and tested: These AI image generators consistently delivered the best results. Here's a look at how they work, how much they cost, and how they handled a specific prompt.

InstagramApr 24, 2025
How to Share Instagram Feed Posts to Stories: 3 Simple Steps

Everything you need to know about sharing a post to your Instagram Stories (and why it could be great for your reach and engagement).

LinkedInApr 24, 2025
The Best Time to Post on LinkedIn in 2025: 1 Million Posts Analyzed

We analyzed over 1 million posts sent through Buffer to pinpoint the best time and day to post on LinkedIn for maximum engagement.

YouTubeApr 24, 2025
When is the Best Time to Post on YouTube? We Analyzed 1 Million Videos to Find Out

Videos and shorts posted on these days and at these times tend to get higher views.

InstagramApr 23, 2025
7 Tips + Tricks for Instagram Edits: How to Use the New Video Editing App

After some serious hands-on time with Edits by Instagram, here’s my everything guide, from getting started to tips and tricks to take you to the next level.

InstagramApr 10, 2025
How to Get Verified on Instagram: 2 Ways To Get Your Blue Check in 2025

What Instagram verification is, the two ways to get a blue check, (with and without paying for Meta Verified), plus some FAQs about the process.

TwitterMar 25, 2025
The Best Time to Post on Twitter/X in 2025: Based on Data from 1 Million Posts

We analyzed more than 1 million tweets to pinpoint the best time, day, and post format for maximum engagement on X (formerly Twitter).