@George -
The "MOFO" has been beaten out of me by several. It won't be appearing in the new version of the site. It's been fixed. :-)
As for the rest...
I Will Follow: They released one set of singles in the fall in the UK, and the other set the following spring in the US. These are combined into two entries. What isn't combined is the live singles in 1982 and in 1983. Those are maintained as separate due to the length of time passing between the single releases and the eventual live releases. Plus the songs are different and the covers are different. I think it works as it is. Comments welcome though.
Sunday Bloody Sunday / Two Hearts and If God Will Send / Mofo:
Two halves of the same single with similar covers and similar release dates. But they were released under two different names. Thus I'll probably always keep those separated. Just to help people looking for info on Mofo, who might be confused if it was listed as "If God Will Send His Angels / Mofo".
Even Better Than the Real Thing:
There was only a week or two of separation between the main release and the remixes showing up. It wasn't an extended time and nothing else came out at the same time. Yes different covers, but other than that it was all part of the same release package in my opinion. I once separated these but combined them in 2004 when the discography had it's last major facelift.
Please / PopHeart:
These were separated by a month to six weeks in some regions, but not all. Some of them got them back to back. When we last refreshed U2W, PopHeart was still being sold in Canadian shops as a separate EP, and it looked like it might have some legs similar to Wide Awake in America, something they'd actually keep in stock on a long term basis. I've been content to keep these separate because of the PopHeart name, and the fact one was being treated as a single and the other seemed to be continued to be stocked, but it might have just been an overstock back in '97. Because there's no sign of PopHeart today, and I can still go in and buy Wide Awake in America.
Walk On:
Released Feb 20 in Canada / November 19 in Rest of world. Same cover picture, but different edits of the main track released, and different b-sides. In between there were a number of other releases.
Stuck in a Moment:
Released Oct 30 in Canada / January 29 in Rest of world. Similar cover picture but different b-sides. In between there were a number of other releases.
All Because of You:
February 8, 2005 in Canada, and October 11, 2005 in the Rest of world. Similar cover photos but different b-sides. In between tehre were a number of other releases.
My preference? Right now I'm leaning to combining everything that has the same name with the exception of the live singles for "I Will Follow" which don't feel like they should be combined to me. I would maintain "Sunday Bloody Sunday" and "Two Hearts" as separate entities. I would maintain "Mofo" and "If God Will Send His Angels" as separate entries. But "Stuck in a Moment", "Walk On" and "All Because of You" would become one entry. The issues with that will be listing things by release date, people will see things in somewhat of a skewed order because of the Canadian singles (pages will sort by earliest released item and thus it will look like "All Because of You" was the second single from Bomb. Also a little more explanation would be needed on the individual pages to explain the release schedule etc. But i think that's doable.