I can’t post anything to my site or edit anything

Unless you added hundreds of spam links on your own site, you’ve been hacked.

That is an impressive number of spam links.

Did you notice this – <meta name=”generator” content=”WordPress 2.0″ />?

how would I know that there are hundreds of spam links there and how would i get rid of them?

Go to your site, and in your browser toolbar, select View > PageSource. Scroll all the way down to the bottom and you will see.

Or, here is a text only link from your last cached page view in Google. It will reveal the spam.

https://74.125.47.132/search?q=cache:2P_hMoj4z00J:www.ilfpost.org/+https://ilfpost.org/&hl=en&gl=us&strip=1

As far as where to start;

Here: https://codex.www.ads-software.com/FAQ_My_site_was_hacked

..and here: https://www.ads-software.com/search/hacked?forums=1

More than everything you ever wanted to know will be contained in those links and on Google search.

Best of luck to you.