There has been a global impact on data services within the o2 network.
Despite a banner provided by giffgaff at the top of the Help page, over 80% (sometimes over 90%) of posts in the Help section referred to this outage.
My idea is that during these admittedly occasional but global outages that affect all members, there is a divert in place when the user clicks "Post" to inform them of the issue. If they still feel the need to post a question, they can.
I feel this would have had a huge impact on the sheer number of posts today.
Worth bearing in mind for the future.