N2EY: "This means something as simple as a text from a friend that 15 is open to Norfolk Island counts as "assistance".
Think this is a stretch! Do not the rules apply to the 'actual contact' and not to how you find out what band is open to where.
Just asking. 
Let's look at the actual rules again:
"QSO finding assistance: The use of any technology
or other source that provides call sign or multiplier identification of a signal to the operator. This includes,
but is not limited to, use of a CW decoder, DX cluster, DX spotting Web sites (e.g., DX Summit), local or remote call sign and frequency decoding technology (e.g., CW Skimmer or Reverse Beacon Network), or
operating arrangements involving other individuals."
A text which says "15 is open to Norfolk Island" actually contains a lot of useful "assistance". Here's why:
- 15 isn't always open from the USA to Norfolk Island (which is in the South Pacific, between New Zealand and New Calendonia, not South America).
- There aren't many amateurs on Norfolk Island, and even fewer that operate in a specific contest. So it's almost certainly a multiplier, and for many a new entity overall.
- Amateurs who doesn't get that text will have to find the Norfolk Island station on their own. Those who get the text have a much easier time of finding it
because of information supplied by other individuals. Which means....assistance.
Also, consider this:
Where should the line be drawn - and why?
Consider the following texts from Amateur T to Amateur J:
1) "15 is open!"
2) "15 is open to the South Pacific!"
3) "15 is open to Norfolk Island!"
4) "15 is open to Norfolk Island (VK9XYZ)!"
5) "15 is open to Norfolk Island (VK9XYZ), 21,023 kHz"
Obviously, 5) is "assistance" because there is specific information on the call, multiplier, and frequency.
But what about 3) and 4)? 4) includes the callsign and multiplier, 3) indicates the multiplier.
IMHO, if station J gets ANY information from other individuals, groups, or automated systems outside their own station about what bands are open, what parts of the world are coming through, callsigns, multipliers, etc. , then station J is "assisted".
Nothing wrong with being assisted. Nothing at all.
Call it the "boy and his radio" principle.
IMHO
73 de Jim, N2EY