Personalize the landing page based on user's location, when it's applicable.
It's relatively easy to learn the visitor's country, and show it within your product screenshots.
Stripe took it to another level wit their product Stripe Checkout.
They identify your country and personalizes your experience by adding names and addresses from your own country.

Overlay Modal to Hint Your Product
Spark curiosity when you ask the "big" questions (eg. signup, upgrade).

Offer Easy Migration
When you build a product in an established market, it's obvious that many potential customers will already use another similar product.

Leverage Social Proof
Social proof is your most powerful asset. You build credibility & encourage acceptance of your product. As humans, we tend to follow the
