Wordpress is kind of forever. I was helping someone with a decade-old managed wordpress a little while ago; it required updating plugins and ditching a few of the old ones, but otherwise a relatively simple process.

> But no one will find it.

The spam problem. This destroyed USENET, and has now destroyed blogs. People retreat to the half-dozen sites that have half-effective spam fighting. Twitter has abandoned spam fighting and is slowly sinking as a result.