I send cards, letters or notes with personal, well thought out messages inside. Sometimes sending gifts, especially random gifts without an occasion. I try to visit, if at all possible, otherwise phone calls are great. IMs and emails are nice, and I think often the most effective way to show someone that you care. Much in the way that you describe, @Hawaii_Jake, in that you are able to have conversations and show that you care simply by letting them know that you’re there and want to spend time with them.