Hi Downside,
I'm afraid you've missed the goodies on Olive Tree. Most of the links going to Ancestry are marked as such - and there are many transcribed databases (thousands) on Olive Tree that are free to all.
For eg the link I gave you for microfilm lists doesn't require leaving the Olive Tree site! You just scroll down the page, READ what is there, and then click to the next page (on Olive Tree) if needed.
The link I gave you to use the custom search engine to search multiple websites for ships lists doesn't go to Ancestry, it does what I described - it searches many different websites, such as Olive Tree itself, ISTG, TheShipsList etc -- big sites with thousands of passenger lists online for FREE. The Search engine is on the page of the link I gave
http://olivetreegenealogy.com/ships/search_shipscanada.shtml so there's no need to click off anywhere!
I think there's also a misconception about Ancestry. You say "That is good news about that forthcoming project by the Library and Archives Canada, providing ancestry.com don't get their grubby mits on it" LAC often doesn't index the records it puts online - which makes it hard to search them. Don't get me wrong, it's WONDERFUL that they put them online! But that is where Ancestry steps in - they pay to have the records indexed and then they put that index on their site with their other databases. They spell it out clearly that the actual records you get to look at are drawn in from the LAC site (with LAC's permission). So it's a win-win situation as far as I'm concerned. If I choose to pay for the convenience of searching an every name index, I can. If I choose not to, I can search screen by screen thro the images. Freedom of choice
As for Ancestry being on so many websites, that's understandable. It costs a lot of money to provide free data and information to visitors! So putting ads up on a website devoted to providing free databases, is a way for that website to recover some of its costs. In fact, Rootschat.com which I think we can all agree is fantastic, has Ancestry ads. Good for them!! Running a website is costly. Adding free data to it is even more costly because the data isn't free to start with. The webmaster has to pay to get that data, then transcribe it or pay others to transcribe it .... then pay for the space and bandwidth to have it online...etc. I'm just glad the info is free, I could care less what ads, or how many, are on a good site. End of my 2cents Candian worth
Next question you had was "Am I right in thinking that British born people are not classified as immigrants?" No, you're wrong. Anyone from country "A" coming INto country "B" is an immigrant in Country "B". You might be confusing this with naturalization and citizenship. British subjects (before 1947) did not have to naturalize in Canada because they had already taken the oath to the King/Queen (which is what naturalization is -- renoucing allegiance to one country and swearing it to another).
http://naturalizationrecords.com/ will answer any other questions you might have.