Google algorithms are based on current hits and search cues.
For myself, I keep a photo log and multiple points of interest. I post on my blog, facebook, Youtube, Twitter, and FAA at set times per week and month. If I post on a webpage or a newspaper, then I link my comment to my webpage or new photo.
If you are going to remain dormant on the internet, then you cannot expect Google or any other search engine to maintain your web presence for you.
Good luck and glad you are back.