I have started using a site called mealopedia.com - I was put on to it by another blooper!
I haven't lost weight, coz I'm pregnant... HOWEVER, in the first week my partner has noticeably lost weight. I think the main key is to really work out a balanced diet, coupled with exercise (and his is very simple exercise - he walks the dogs). Not ever meal on the website is the healthiest, but it has helped us to change up the diet a bit, have some different foods... and with working out a plan and shopping for the week, rather than every couple of days.. we've not wanted to eat out and are enjoying the variety. There are lots of great recipes in there, and they are incredibly easy. I also adapt a couple according to taste, but it is fantastic.