In another article here, we tell how the Delcampe selling site has restricted sales and purchases by Russian and Belarussian users. PayPal earlier restricted transactions involving Russians. eBay is making allowances for sales to both Ukraine and Russia.
How about you? Has the crisis had any effect on how you collect, buy, sell or trade?
If you choose to comment, please only talk about how this affects philately, not your opinion of world affairs. This is not the place for that.