Hi hilaryjane, I think ujs's idea is related to how long you have been doing 5:2 (two months or more, say) rather than when you joined the forum, so you qualify! Anyway, we are not being cliquey here, anyone is welcome to put in an appearance IMO if they feel themselves to be an oldie however described.

Anyway, if two months on 5:2 makes one an oldie then what am I, having started 5:2 in September 2012? Not so much 'old' as 'went to heaven' - that's maintenance for 5:2ers!
You young whippersnappers you...
Maintenance isn't quite as heavenly as I hoped - see my progress tracker. I am still trying to find a formula that works and after two good weekends (that is, bad weekends for the scales) I have a bit of lost ground to make up. So fasted Monday, half-fasted yesterday and plan to fast today (as my diary happens to be empty).
More generally I hadn't dieted much before trying 5:2, I did do Atkins briefly long ago when it was all the rage, and as is usual with diets (I gather) it worked well but it wasn't sustainable and I put all the weight back on and more. This time I am determined that isn't going to happen.