Because I go through time periods where I don't get much in the way of synchronicities, I tend to look at them like they are a "yes" from the universe, an acknowledgement that I'm going with the flow, on the right path. I get more when I'm in a good mood, but sometimes when I'm sad, they still show up and then I find them comforting.
Some of my favorite ones happen between me and someone I'm close to, and I think that's a sign of a strong connection/force, like electricity. For instance, one of my best girlfriends was having a birthday and spending it at her parents' house, and I went over there and had wrapped her present in paper with lots of wildlife all over it -- for no reason other than I happened to have this paper. Her parents were watching Animal Planet and at the exact same moment Lynn started unwrapping this present, which had a rhino on top facing to the right, a rhino appeared on tv, facing right. It looked exactly the same. I nudged Lynn, who was looking at the package, and I went, "LOOK! LOOK!" and she looked up in time to see the rhino on tv. Very strange.
Another just recently, a year ago a friend of mine who lives in FL sent me a link to a website for a band he'd just seen and really liked. I saved the link not because I was interested in the band but because I liked the website design, which had a moon theme, and I wanted to create something like it eventually. All this time went by, and then a couple weeks ago I e-mailed another friend who lives about 80 miles from here to help me with this website idea. He called, and we talked and e-mailed some ideas back and forth, and I found that link and sent it to him. Then when I looked at it, I saw that this band was playing in his town that week. That totally freaked me out.