Major Currency Pairs:

* #EURUSD (Euro to US Dollar)

* #GBPUSD (British Pound to US Dollar)

* #USDJPY (US Dollar to Japanese Yen)

* #AUDUSD (Australian Dollar to US Dollar)

* #USDCAD (US Dollar to Canadian Dollar)

* #USDCHF (US Dollar to Swiss Franc)

* #NZDUSD (New Zealand Dollar to US Dollar)

Other Currency Pairs:

* #EURGBP (Euro to British Pound)

* #GBPJPY (British Pound to Japanese Yen)

* #EURAUD (Euro to Australian Dollar)

With added context (if you are talking about analysis or forecasts):

* #EURUSDAnalysis (Analysis of the Euro to US Dollar pair)

* #GBPJPYForecast (Forecast of the British Pound to Yen pair)

* #USDCNH (US Dollar to Chinese Yuan - important for followers interested in the Chinese economy)

If you are talking about a specific price movement:

* #EURUSDBullish (Bullish outlook for the Euro to US Dollar pair)

* #USDJPYBearish (Bearish outlook for the US Dollar to Yen pair)

You can choose the hashtag that matches the currency pair you are discussing and the content of your post. For example, if you are analyzing the Euro to US Dollar pair, then #EURUSD or #EURUSDAnalysis would be a good choice.