You might have noticed that we're changing how corp ads and searches work. If not, this one's for you. Full details here: patch notes
I mainly want to draw your attention to this one line:
- Existing ads will not show up in searches until they have been edited.
Your ads are not gone. No ISK is lost. You just need to go into your ad, set it up with the new options and you're golden. We're also adding some usability fixes in the first patch to show ad expiration and sort out the usability issues with applications.