I was going through Webmaster Tools and I noticed that under 'links to your site' there's only 40 links showing. Down from 700+ yesterday.
I don't think it was anything to do with the quality of the sites linking in because some of them were quite high ranking blogs so I don't think it's Penguin related.
This has happened to me once before on a previous site and after about a month or so they came back, so it's not something I'm super worried about, but it's really odd.
Has anyone else experienced this? Or know why it happens?
Update - All links seem to have returned 20/2/13