I don’t think there is something troubling or massy in it, in actual fact I believe it’s pretty good stuff.
This isn't a bad thing ..... it is good actually because it will appear into other people's notifications that you have liked your own link.... this will show the importance ....
At the moment I do not think it's a bad thing... the more exposure the better and Google are trying to build their visibility. But always be wary with this kind of thing. As Google+ grows in popularity and more people try and game the system things will change.